MASTER LOBE PROFILE REFERENCE GUIDE
HOW TO ORDER
HOW TO ORDER COMP Cams® leads the industry in camshaft lobe offerings. With thousands of active lobes in the COMP library, the combinations are infinite for any given engine. That means that you can have a cam ground to your specific needs, and you have the broadest selection of lobes available anywhere.
2. Selecting Lobes
Choosing a cam for your specific application is a four-step process:
The lobes are listed on pages 8-61 and represent the most current library of lobes offered by COMP Cams®. They are arranged in groups, each of which is unique in its application. Along with each group is a description of each type, which is intended to help clarify each family of lobes so that you may accurately select lobes for your application.
1. Select a core 2. Select the lobes 3. Select a lobe separation angle 4. Determine the part number and grind number, and order the cam
Some lobes specifically designated to be intake or exhaust lobes do not necessarily have to be run on the valve for which they were designed. If an exhaust lobe has the desired spec for intake (or vise versa) they may be used in that manner.
Camshaft lobes are broken into families, with each family having been developed to fit the performance requirements for certain applications. So, it is in that context that lobe selection should begin.
Keep in mind while viewing the listings that certain flat tappet lobes are designed to be used only with correct diameter lifters.
1. Selecting a Core Within the parameter of core applications, we have fifteen cores that cover many engine applications. They are designated as follows: -0 Steel Billet Round Lobe -5 Flat Tappet (Either Hydraulic or Solid Lifter) -5RR Reverse Rotation Flat Tappet -7 Special Flat Tappet -8 Street Roller (Either Hydraulic or Solid Roller) Special Material – Bronze Distributor Gear Not Required on Most Applications -9 Steel Billet Roller -9L OHC Roller Left -9R OHC Roller Right -9W Welded Steel Billet Flat Tappet -10 Steel Billet Roller -11 Steel Billet Roller -12 Steel Billet Roller -14 4/7 Swap Steel Billet Roller -16 Steel Flat Tappet -47 4/7 Swap Cast Flat Tappet Special Note: The -0 core is a round lobe core that is not heattreated. These cores must be roughed and then heat-treated before finished lobe grinding takes place. The complete core list follows on pages 421-423. The list is separated into the different cam core types. The part number in front of each core is used in ordering a custom ground cam for a particular engine type. It consists of a two-digit prefix designating the engine type, followed by a dash (-) and three consecutive zeros. The zeros indicate a custom ground cam. Next are a dash and number from the core designations previously listed.
Example:
EnginePrefix Part Number Core Type 12- 000 -9
The number 12- indicates Small Block Chevy (found on the core listing on pages 421-423). The number 000 indicates a custom grind. The -9 indicates steel billet roller core.
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3. Choosing Lobe Separation Angle Lobe separation angles (the angle in cam degrees between the intake and exhaust lobe are also referred to as “lobe centers”) are very engine combination dependent. In general, a tighter separation (ex. 104°-106°) results in a “peakier” torque curve more suited to stick-shift cars with multiple gear ratios to change between. Wider lobe separation (ex. 110°112°) results in a broader, flatter torque curve that is more suited to automatic transmission cars with fewer gears from which to choose. Therefore, engines have to be more powerful over a broader rpm range. Also, as lobes get larger at .050” duration (275° and up), it is necessary to begin widening separation angles to lessen the amount of overlap that accumulates from the larger lobes. One final note about lobe separation angles - the cam cores that are available for each application are designed for nominal, standard lobe separation angles. Straying from this nominal angle too far in one direction or another can result in the heat-treated surface of the core being ground through to the soft material underneath. Soft lobes will fail in an engine if allowed to run for very long. Whether or not the heattreated surface is ground through also is obviously dependent on the lobe being ground on the core. The bottom line is that not all grinds can go on every core that is available. More popular engines, like the Small Block Chevy, have a variety of cores available with varying lobe separation angles that can accommodate almost any grind. Less popular applications, like the Flathead Ford V8, only have one core available. Therefore, they are somewhat limited in terms of what grind will fit on the single existing core.
4. D etermining a Part Number and Grind Number and Ordering With the part number determined in the core selection process, the grind number is the final step prior to ordering the cam. This process is simple and is accomplished by picking up the “lobe number” that appears in the left column of the lobe selection chart. The intake lobe will be first and the exhaust lobe will be second, followed by the lobe separation angle. For example, if lobe 5201 is selected as the intake and 5203 is selected as the exhaust, with a 106° lobe separation angle and this configuration is to be ground on a Small Block Chevy core, the full number for ordering that cam would be: Part #: 12-000-5 Grind #: CS 5201/5203-H106
HOW TO ORDER
When it comes to ordering a roller cam, there are two things that need to be considered: journal diameter and roller lifter wheel diameter. Journal size and wheel diameter are very important in making sure the lobe is performing to the specifications you require. For example, if you were selecting lobes for a custom grind Big Block Chevrolet cam then you would need to make sure the lobes were designed for a Big Block Chevrolet journal diameter (1.948"). If Small Block Chevrolet lobes were used instead, the specifications of the cam would be inaccurate. The journal diameter of a Small Block Chevrolet is 1.868". The lobes on the big block cam would “grow” approximately 2 degrees if ground using small block lobe designs. The same principle applies to various roller lifter wheel diameters. COMP Cams® has done the math for you, so all you need to do is make sure you order the lobes with the right suffixes to signify the correct journal diameter and roller lifter wheel diameter.
Master Suffix Codes for Various Roller Cam Journal Diameters: T – 1.750" (Very Small-V6 Buick, etc.) N – 0.900" Base Circle Diameter (Any Journal Size) S – 1.868" (Small Block Chevrolet) B – 1.948" or 1.968" (Big Block Chevrolet or 50mm) F – 2.036", 2.051" or 2.081" (Small Block Ford and Cleveland) R – 2.1653" or 2.1234" (55mm, LS1 or Big Block Ford) M – 2.3622" (60mm)
Master Suffix Codes for Various Roller Lifter Wheel Diameters: E – 0.812" (from 0.792" to 0.832") G – 0.850" (from 0.830" to 0.870") H – 0.950" (from 0.930" to 0.970") U – 2.000" (1.000" Radius Sliding Tappet) No Suffix – Standard (from 0.750" to 0.790")
Examples: If you wanted to order a cam using lobe #4314 on the intake and lobe #4074 on the exhaust for a Big Block Chevy cam with standard journals, standard .750” lifter wheel diameter and a 110° lobe separation, your grind number would be:
Core Listings Non-Standard Journal Size Chevrolet Small Block 1.868" Stock Chevy Bearing Size 1.875" Stock Block with Roller Bearings 1.948" Stock Size Rocket Block or Big Block 1.968" or 50mm Rocket Block with Roller Bearing 2.165" or 55mm Large Roller Bearing Chevrolet Big Block 1.948" Stock Chevy Bearing Size 1.968" Stock Block with Roller Bearings 2.124" Pro Stock Roller Bearing (Same Size as Big Block Ford) 2.165" or 55mm Large Roller Bearing “Jesel Core” 2.362" or 60mm Large Roller Bearing
HOW TO ORDER
Roller Cam Lobe Suffix Codes
Ford Small Block, 351 Windsor & SVO Block Journal #1 – 2.080" Stock Ford Bearing Size Journal #2 – 2.065" Stock Ford Bearing Size Journal #3 – 2.050" Stock Ford Bearing Size Journal #4 – 2.035" Stock Ford Bearing Size Journal #5 – 2.020" Stock Ford Bearing Size Journal #1, 2, 3 & 4 – 2.165" Roller Bearing – “Large Roller Bearing” or “Roush Roller Bearing” Journal #5 – 1.968" Roller Bearing – “Large Roller Bearing” or “Roush Roller Bearing” All Journals – 2.051" Roller Bearing – “Ford Motor-sports” or “SVO Design Roller Bearing” All Journals – 2.081" Roller Bearing – New Design Ford SVO Chrysler Small Block Journal #1 – 1.998" Stock Chrysler Bearing Size Journal #2 – 1.982" Stock Chrysler Bearing Size Journal #3 – 1.967" Stock Chrysler Bearing Size Journal #4 – 1.951" Stock Chrysler Bearing Size Journal #5 – 1.561" Stock Chrysler Bearing Size Journal #1, 2, 3, & 4 – 1.969" Joey Arrington Style Roller Bearing Journal #5 – 1.575" Joey Arrington Style Roller Bearing All Journals – 1.968" Mopar Performance Roller Bearing 2.362" or 60mm Roller Bearing
CB 4314B/4074B R110 However, if you wanted to order a cam with the same specs for a Big Block Chevy but with 55mm journals and a .812” lifter wheel diameter, your grind number would be:
CB 4314RE/4074RE R110
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SPECIAL SERVICES
SPECIAL SERVICES ComP Cams® Special Services A partial listing of the most common high end treatments and special processes you can order for your COMP Cams® camshaft . Additional services are available; contact us for any special needs .
Camshaft Surface Preparations Nitriding - Part #1-111-1 This is the most effective process for extending the life of a high performance flat tappet camshaft . Nitriding increases the hardness of the camshaft surface metal by physically injecting nitrogen “needles” into the surface of the lobes and journals to increase their resistance to wear . Camshaft micropolishing - Part #1-114-1 This procedure removes microscopic imperfections in the surface of the metal . Micropolishing can further increase the durability of the camshaft and can be performed to just the camshaft lobes or all wear surfaces . Xtreme Surface Finish Enhancement - Part #1-137-1 Our highest-quality finishing process involving considerably more polishing than any other procedure . This is most commonly used in steel-on-steel contact valve train situations, such as high end circle track flat tappet camshafts where billet materials have repeated contact in extremely high rpm environments .
Precision Camshaft measurement Basic Camshaft Profiling - Part #1-126-1 Performed on two lobes of any camshaft, the component is measured to determine its lift, duration and lobe centerline specifications . Adcole Camshaft Profiling - Part #1-125-1 Our highest precision camshaft measuring device, the Adcole checks all 16 camshaft lobes to determine that the cam meets all specifications requested by the customer . The Adcole measures camshaft specifications to 0 .00001 of an inch .
Special operations
Installation of Dual Dowel Pins - Part #1-121-1 For certain applications, dual dowel pins can be installed to further ensure that the camshaft and timing gear connection are secure . This is most commonly done with early model Ford V8’s and classic Chrysler Hemi engines . We can also machine the timing gear to adapt to this new configuration . Drilling and Tapping Camshaft Nose - Part #1-136-1 A process performed on Viper camshafts, the nose of the camshaft is drilled and then tapped to convert from a single timing gear bolt-up to a three-bolt aftermarket timing chain set . This allows for a wider selection of timing sets . machining a rear Camshaft Journal groove Part #1-119-1 A process commonly performed on 1965-‘66 Big Block 396cid Chevrolet engines, which features oiling systems that require a groove be cut into the rear journal of the camshaft . This was a two-year only condition, not required in all 1967 and newer Big Block Chevrolet engines . machining of the rear Pump Drive - Part #1-116-1 Allows sprint cars-style engines to run the fuel pump from the rear of the camshaft rather than traditional placements . Side Cutting of Camshaft Lobes - Part #1-127-1 A process often requested when the engine’s lifter bores have been enlarged that helps to keep the lifters from making contact with adjacent lobes . Sleeving of the Camshaft Journal - Part #1-132-1 Most popular with Ford Windsor engine roller bearing camshaft applications, a sleeve is placed around the standard rear journal to increase the size of the journal, making it compatible with rear roller bearing usage . Fuel Pump Lobe regrinding - Part #9-999-1 A refinishing process used to clean up a fuel pump lobe which may have been damaged or is showing excessive wear .
replacement of the Camshaft Dowel Pin - Part #1-120-1 This is a process which repairs camshafts where the current dowel pin has either been sheared off or damaged in some manner . The old dowel pin (or remaining part) is removed by machining and a new dowel pin is inserted .
Pro Plasma™ Nitriding Now available for any COMP Cams® flat tappet cam, Pro Plasma™ Nitriding is a patented process that infuses nitrogen into steel to deliver unmatched wear resistance . See Camshaft Surface Preparations above to add nitriding to any flat tappet cam .
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CAM CORES Core Description
FLAT TAPPET CAM CORES (HYDRAULIC OR SOLID) 10-000-5 AMC 68-000-5 AMC 114-000-5 AMC 63-000-5 BUICK 67-000-5 BUICK 69-000-5 BUICK 90-000-5 BUICK 91-000-5 BUICK 92-000-5 BUICK 96-000-5 BUICK 94-000-5 CADILLAC 11-000-5 CHEVROLET 11-000-5RR CHEVROLET CHEVROLET 12-000-5A 12-000-5RR CHEVROLET 15-000-5 CHEVROLET 16-000-5 CHEVROLET 18-000-5 CHEVROLET 48-000-5 CHEVROLET 60-000-5 CHEVROLET 61-000-5 CHEVROLET 62-000-5 CHEVROLET 77-000-5 CHEVROLET CHRYSLER 20-000-5A 21-000-5 CHRYSLER 22-000-5 CHRYSLER 23-000-5 CHRYSLER 24-000-5 CHRYSLER 26-000-5 CHRYSLER 64-000-5 CHRYSLER 31-000-5 FORD 32-000-5 FORD 33-000-5 FORD 34-000-5 FORD 35-000-5 FORD 35-000-5RR FORD 36-000-5 FORD 37-000-5 FORD 38-000-5 FORD 41-000-7 FORD 44-000-5 FORD 65-000-5 FORD 66-000-5 FORD 70-000-6 FORD 71-000-5 FORD 72-000-5 FORD 104-000-5 FORD 10800E FORD 10800I FORD 81-000-5 HOLDEN 82-000-5 HOLDEN 83-000-5 INTERNATIONAL 95-000-5 MITSUBISHI 79-000-6 NISSAN 80-000-5 NISSAN 84-000-6 NISSAN 88-000-6 NISSAN 42-000-5 OLDSMOBILE 103-000-5 OLDSMOBILE 53-000-5I OLDSMOBILE 53-000-5E OLDSMOBILE 14-000-5 PONTIAC 51-000-5 PONTIAC 52-000-5 PONTIAC 74-000-5 TOYOTA
Engine
290-401 V8 (1966-91) 199-258 L6 (1964-95) 2.5L 198-225 V6 Odd Fire (1962-67) 231 V6 Odd Fire (1975-77) 3.0L-4.1L V6 (1978-87) 215 Aluminum V8 364-401-425 V8 350 V8 (1968-80) 400-430-455 V8 (1967-76) 368-425-472-500 V8 396-454 V8 (1967-96) 396-454 V8 Reverse Rotation (Marine Applications) 262-400 V8 (1957-98) 262-400 V8 Reverse Rotation (Marine Applications) 200-229 V6 (1978-84) 2.8L, 3.1L and 3.4L (1980-95) 4.3L V6 (1983-97) 348-409 V8 (1958-65) 235 L6 Blue Flame (1952-62) 195-250 L6 (1962-85) 292 L6 (1963-90) Chevette 1400cc (1976-77)/1600cc (1976-87) 273-360 V8 (1968-99) 383-440 V8 Single-Bolt (1958-78) 2.2L, 2.5L L4 OHC (1981-93) 383-440 V8 Three-Bolt (1958-78) 426 Hemi V8 (1966-71) 392 Hemi V8 225 L6 (1960-85) 289-302 V8 (1962-99) 351C, 351M-400M V8 (1970-82) 352-428 V8 FE (1963-95) 429-460 V8 (1968-99) 302 HO (1985-95), 351W V8 (1969-95) 351W Reverse Rotation (Marine Applications) 2600, 2800 V6 272-292-312V8 Y-Block (1955-62) 2800 V6 (1983-85) Flathead V8 (1949-53) 3.8L (1984-87) Only 144-250 (1960-83) 240-300 L6 (1965-95) 2000, 2300 OHC L4 (1983-87) 1600 L4 OHC (1965-85) 2000 L4 OHC (1970-77) 3-Bearing Journal V8 "FE" (1958-62) 2.0L Zetec Exhaust 2.0L Zetec Intake 6 Cyl. Flat Tappet 186" 252-308 V8 (1970-88) 304-392 V8 (1970-78) 2000, 2600 L4 RWD & FWD (1979-87) 1600, 1800 L4 (1969-84) 6 Cyl. SOHC 2200-2800 (1970-84) Gun Drilled NAP Z L4 (1981-89) 260-455 V8 91967-84) V8 45° Bank Angle (1964-68) 2.3 Quad 4 Intake 2.3 Quad 4 Exhaust 151 L4 (1977-78) 265-455 V8 (1955-81) 151 L4 Iron Duke (1978-89) 2TC-3TC L4 OHV 1588-1700cc (1970-82)
CAM CORES
Core #
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CAM CORES
CAM CORES 87-000-5 TOYOTA 20R, 22R L4 (1975-89) 73-000-5 VOLKSWAGEN 1200, 1600 4 Cyl. 85-000-5 VOLKSWAGEN 1457, 1788 SOHC 4 Cyl. (1974-89) SPECIAL FLAT TAPPET CAM CORES 11-000-7 CHEVROLET 396-454 V8 Special Pro Core CHEVROLET 262-400 V8 Special Pro Core 12-000-7A CHEVROLET SB2 Block/Heads − Steel 04-000-16A CHRYSLER "R" Block w/ 48° Lifter Bore 20-000-7A 21-000-7 CHRYSLER 383-440 V8 Single-Bolt (1958-78) 55-000-16 CHRYSLER R5 Block/P7 Head −Steel 32-000-7 FORD 351C, 351M-400M V8 (1970-82) FORD SVO V8 35-000-7A 35-000-16 FORD SVO V8 − Steel 39-000-7 FORD SVO V6 Odd Fire 41-000-7 FORD Flathead V8 STREET ROLLER CAM CORES (HYDRAULIC OR SOLID ROLLER) (Special Material − Works w/ Most Standard Distributor Gears) 01-000-8 CHEVROLET 454-502 Generation VI Big Block 07-000-8 CHEVROLET LT1 Engine 08-000-8 CHEVROLET 262-400 V8 w/ Roller Cam (1987-98) 09-000-8 CHEVROLET 4.3L V6 w/ Roller Cam (1987-98) 11-000-8 CHEVROLET 396-454 V8 (1967-96) 12-000-8 CHEVROLET 262-400 V8 (1957-98) 18-000-8 CHEVROLET 4.3L V6 (1985-99) 56-000-8 CHEVROLET 4.3L V6 (1992-99) w/ Balance Shaft 97-000-10 CHRYSLER V10 Viper 111-000-10 CHRYSLER 2003 & Up Viper Three-Bolt 112-000-11 CHRYSLER 5.7 & 6.1L Hemi V8 135-000-8E CHRYSLER Neon "Y" Engine Code Exhaust 135-000-8I CHRYSLER Neon "Y" Engine Code Intake 107-000-8 DODGE Neon SOHC 2.0L (1995-01) 31-000-8 FORD 289-302 V8 (1962-99) 32-000-8 FORD 351C, 351M-400M V8 (1970-82) 35-000-8 FORD 302 HO (1985-95), 351W V8 (1969-99) 117-000-9 GM 6.5L Diesel 132-000-12 GM Duramax 6.6L Diesel 146-000-11 GM LS Single-Bolt Engine (2006-Present) 146-000-13 GM LS Single-Bolt Engine w/AFM (2006-Present) 156-000-13 GM LS Single Bolt Engine w/ VVT (2007-Present) 156-000-13 GM LS Single Bolt Engine w/ VVT/AFM (2007-Present) 119-000-8E MITSUBISHI 4G63 Evolution VIII Exhaust (2003 & Up) 119-000-8I MITSUBISHI 4G63 Evolution VII Intake (2003 & Up) RACE ROLLER CAM CORES − STEEL BILLET 10-000-9 AMC 390-401 V8 (1966-79) 67-000-9 BUICK 231 V6 Odd Fire (1975-77) 93-000-9 BUICK Stage II Even Fire 02-000-9 CHEVROLET 200-229 V6 Odd Fire w/ Splayed Valve Head 08-000-9 CHEVROLET 262-400 V8 (1987-98) 07-000-9 CHEVROLET LT1 Engine (1992-98) CHEVROLET 396-454 V8 (1967-96) 11-000-9A 01-000-9 CHEVROLET 454-502 Generation VI Big Block CHEVROLET 262-400 V8 (1957-98) 12-000-9A CHEVROLET Standard Chevrolet Block w/ SB2 Heads 03-000-9A CHEVROLET SB2 Block w/ SB2 Heads 04-000-10A 17-000-9 CHEVROLET V6 Odd Fire Race 19-000-9 CHEVROLET 262-400 V8 w/ Splayed Valve or Buick Head 28-000-9 CHEVROLET Gaerte L4 29-000-9 CHEVROLET Gaerte L4 w/ Splayed Valve Head 48-000-9 CHEVROLET 348-409 V8 (1958-65) 76-000-9 GM 3800/3.8L V6 (1996-Present) 54-000-11 GM LS1 Engine (1997-Present) 46-000-9 GM 8.1L V8 CHRYSLER 273-360 V8 (1968-99) 20-000-9A 23-000-9 CHRYSLER 383-440 V8 Three-Bolt (1958-78) 24-000-9A CHRYSLER 426 Hemi V8 (1966-71) A Different journal sizes available
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CAM CORES 392 Hemi V8 9 Bearing Hemi Pro Stock 289-302 V8 (1962-95) 351C, 351M-400M V8 (1970-82) 352-428 V8 FE (1963-76) 429-460 V8 (1968-99) 302 HO (1985-95), 351W V8 (1969-99) SVO V6 Even Fire 4.0L V6 (1990-97) 4.6L SOHC Right Side Cam Set 4.6L SOHC Left Side Cam Set 4.6L & 5.4L DOHC Left Exhaust 4.6L & 5.4L DOHC Left Intake 4.6L & 5.4L DOHC Right Exhaust 4.6L & 5.4L DOHC Right Intake 4.6L 3 Valve Left 4.6L 3 Valve Right R99/R03 Ecotech 2.2L DOHC Intake Ecotech 2.2L DOHC Exhaust DRCE3 Pro Stock 252-308 V8 (1970-88) 260-455 V8 (1965-90) 265-455 V8 (1955-81) 151 L4 Iron Duke Intake Cam Set for 4G63 Exhaust Cam Set for 4G63 Sterling V12
CAM CORES
26-000-9 CHRYSLER 115-000-10 CHRYSLER 31-000-9 FORD 32-000-9 FORD 33-000-9 FORD 34-000-9 FORD 35-000-9A FORD 40-000-9 FORD 49-000-8 FORD 102-000-9R FORD 102-000-9L FORD 106-000-9LE FORD 106-000-9LI FORD 106-000-9RE FORD 106-000-9RI FORD 127-000-9L FORD 127-000-9R FORD 109-000-10 GM 113-000-9I GM 113-000-9E GM 116-000-12 GM 82-000-9 HOLDEN 42-000-9 OLDSMOBILE 51-000-9 PONTIAC 52-000-9 PONTIAC 101-000-8E MITSUBISHI 101-000-8I MITSUBISHI 120-000-12 STERLING RACE ROLLER CAM CORES − STEEL BILLET (ROUND) 10-000-0 AMC 122-000-0 BMW 67-000-0 BUICK 92-000-0 BUICK 96-000-0 BUICK 61-000-0 CHEVROLET 03-000-0 CHEVROLET 07-000-0 CHEVROLET 11-000-0 CHEVROLET 12-000-0 CHEVROLET 54-000-0 CHEVROLET 14-000-0 CHEVROLET 15-000-0 CHEVROLET 129-000-0 CHEVROLET 20-000-0 CHRYSLER 21-000-0 CHRYSLER 24-000-0 CHRYSLER 26-000-0 CHRYSLER 134-000-0 CHRYSLER 72-000-0 FORD 66-000-0 FORD 31-000-0 FORD 05-000-0 FORD 32-000-0 FORD 34-000-0 FORD 30-000-0 HARLEY DAVIDSON® 42-000-0 OLDSMOBILE 51-000-0 PONTIAC 52-000-0 PONTIAC
390-401 V8 (1966-79) Mini Cooper 231 V6 Odd Fire (1975-77) 350 V8 400-430-455 V8 (1967-76) 194-230-250-292-L6 (1962-84) Standard Chevrolet Block w/ SB2 Heads LT1 Engine (1992-98) 396-454 V8 (1967-96) 262-400 V8 (1957-98) LS1 Engine (1997-99) 153 L4 (1962-72) 200-229 V6 Even Fire 3.4L V6 (2001 & Up) 273-360 V8 (1968-99) 383-440 V8 Single-Bolt (1958-78) 426 Hemi V8 (1966-71) Chrysler Donovan Block 70MM Hemi Pro Stock 2000 L4 OHC (1970-77) 240-300 L6 (1965-Present) 289-302 V8 (1962-95) and SVO V8 SVO V8 w/ Mirror Image Heads 351C, 351M-400M V8 (1970-82) 429-460 Vi (1968-99) 80" Evolution 260-455 V8 (1965-90) 265-455 Vi (1955-81) 151 L4 Iron Duke
A Different journal sizes available
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HYDRAULIC FLAT TAPPET
HYDRAULIC FLAT TAPPET HYDRAULIC Flat Tappet HIGH ENERGY™ HYDRAULICS These lobes are to be used in applications where torque, mileage and vacuum are primary considerations. High Energy™ Hydraulics can be used as intake or exhaust lobes. They are simple street performance stock improvement lobes. This group must use a minimum tappet diameter of .842" (Chevrolet) or larger. LOBE NUMBER
RATED DURATION
DURATION IN DEGREES
LOBE LIFT
5224 5225 5223 5226 5206 5200 5211 5205 5207 5212 5232 5222 5215
240-4 244-1 244-2 248-2 252-5 252-4 260-7 260-8 260-9 268-4 268-5 268-6 268-9
@ .050" @ .200" 192 96 196 97 196 101 200 102 206 109 206 113 212 119 212 117 212 122 222 130 218 124 218 128 218 128
.2600 .2567 .2666 .2600 .2706 .2835 .2933 .2795 .2960 .3090 .2853 .3026 .2960
CAMSHAFT TYPE
High Energy™ Rated Duration @ .006" Tappet Lift .842" Min. Dia.
TAPPET LIFT @ TDC 106° .024 .028 .028 .034 .041 .041 .049 .049 .050 .064 .059 .060 .059
110° .017 .020 .020 .025 .031 .031 .038 .038 .039 .052 .047 .048 .047
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .390 .385 .400 .390 .406 .425 .440 .419 .444 .464 .428 .454 .444
1.6 .416 .411 .427 .416 .433 .454 .469 .447 .474 .494 .456 .484 .474
1.7 .442 .436 .453 .442 .460 .482 .499 .475 .503 .525 .485 .514 .503
MAGNUM HYDRAULICS Magnum Hydraulics are to be used in performance applications with a minimum tappet diameter of .842" (Chevrolet) or larger. These lobes are more aggressive in their design characteristics and can be used as intake or exhaust lobes. They are a bigger brother to the High Energy™ family and are frequently used by the budget-minded Saturday night racer. They also provide a very “throaty” sound. LOBE NUMBER
RATED DURATION
5201 5202 5239 5213 5216 5203 5240 5241 5208 5229 5214 5204 5209 5210 5217
270-4 270-5 276-3 276-4 280-3 280-4 280-9 284-3 286-3 288-9 292-2 292-3 296-3 305-3 305-4
CAMSHAFT TYPE
Magnum Rated Duration @ .006" Tappet Lift .842" Min. Dia.
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DURATION IN DEGREES @ .050 224 224 228 226 230 230 232 236 236 237 244 244 246 253 253
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@ .200 135 132 140 136 137 140 142 146 148 148 153 151 158 163 162
LOBE LIFT .3130 .3000 .3160 .3090 .3063 .3200 .3220 .3160 .3270 .3220 .3340 .3235 .3400 .3500 .3380
TAPPET LIFT @ TDC 106° .069 .068 .077 .072 .077 .079 .080 .091 .089 .090 .101 .101 .106 .118 .118
110° .057 .056 .064 .060 .064 .066 .067 .078 .075 .076 .087 .087 .092 .104 .104
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .470 .450 .474 .464 .459 .480 .483 .474 .491 .483 .501 .485 .510 .525 .507
1.6 .501 .480 .506 .494 .490 .512 .515 .506 .523 .515 .534 .518 .544 .560 .541
1.7 .532 .510 .537 .525 .521 .544 .547 .537 .556 .547 .568 .550 .578 .595 .575
HYDRAULIC FLAT TAPPET
Designed for the Dual Energy Cam™ series, these lobes are good for everyday driving where a broad torque curve is necessary. Very easy on related components. Designed as both intake and exhaust lobes. Minimum tappet diameter of .842" is necessary. These lobes produce good power for a daily driver or a weekend toy used as an occasional bracket race car. LOBE NUMBER
RATED DURATION
5110A 5146 5310 5128 5312 5128 5166 5120A 5311 5000 5126A 5326 5163 5130 5127 5315 5006 5129 5136A 5327 5002 5135
255 255 254 265 265 273 265 261 261 263 275 275 275 275 269 272 275 276 277 283 283 284
CAMSHAFT TYPE
Dual Energy™ Rated Duration @ .006" Tappet Lift .842" Min. Dia.
DURATION IN DEGREES @ .050 203 203 204 211 211 211 211 212 213 216 219 219 219 219 221 221 223 227 229 229 233 235
@ .200 110 110 109 117 112 117 117 121 120 123 125 123 125 125 129 124 128 134 137 136 146 139
LOBE LIFT .281 .281 .271 .295 .280 .295 .295 .301 .286 .292 .308 .298 .308 .308 .310 .298 .304 .308 .321 .313 .320 .321
TAPPET LIFT @ TDC 106° .036 .036 .037 .049 .049 .049 .049 .049 .046 .052 .057 .057 .057 .057 .062 .062 .057 .074 .074 .074 .074 .082
110° .028 .028 .027 .039 .039 .039 .039 .039 .039 .042 .047 .048 .047 .047 .051 .051 .050 .062 .062 .062 .070 .070
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .422 .422 .407 .443 .420 .443 .443 .452 .429 .438 .462 .447 .462 .462 .465 .447 .456 .462 .482 .470 .480 .482
1.6 .450 .450 .434 .472 .448 .472 .472 .482 .458 .467 .493 .477 .493 .493 .496 .477 .486 .493 .514 .501 .512 .514
1.7 .478 .478 .461 .502 .476 .502 .502 .512 .486 .496 .524 .507 .524 .524 .527 .507 .517 .524 .546 .532 .544 .546
HYDRAULIC FLAT TAPPET
DUAL ENERGY™ HYDRAULICS
Thumpr™ Hydraulics The Thumpr™ lobe profiles are designed to optimize the character and sound while providing excellent stability and a very wide power range in hydraulic flat tappet applications. Specific profiles are developed uniquely for intake and exhaust. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE
DURATION IN DEGREES @ .050
@ .200
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
106°
110°
1.5
1.6
1.7
Thumpr Int. Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5040
279
227
138
.319
.074
.061
.479
.510
.542
5042
287
235
146
.326
.088
.074
.489
.522
.554
5044
295
243
154
.333
.101
.088
.500
.533
.566
Thumpr™ Int. CB Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5020
279
227
132
.293
.073
.060
.440
.469
.498
5022
287
235
141
.300
.086
.073
.450
.480
.510
5024
295
243
149
.307
.100
.086
.461
.491
.522
Thumpr™ Int. FW Rated Duration @ .006" Tappet Lift .875" Min. Dia.
5520
279
227
137
.306
.073
.060
.459
.490
.520
5522
287
235
145
.313
.087
.073
.470
.501
.532
5524
295
243
153
.320
.101
.087
.480
.512
.544
Thumpr™ Int. CRS Rated Duration @ .006" Tappet Lift .904" Min. Dia.
5820
279
227
142
.324
.075
.062
.486
.518
.551
5822
287
235
150
.331
.089
.075
.497
.530
.563
5824
295
243
158
.338
.103
.089
.507
.541
.575
™
1.800.999.0853
425
HYDRAULIC FLAT TAPPET
HYDRAULIC FLAT TAPPET Thumpr™ Hydraulics LOBE NUMBER
RATED DURATION
@ .050
@ .200
106°
110°
1.5
1.6
1.7
Thumpr™ Exh. Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5055 5057 5059
297 305 313
241 249 257
148 156 164
.310 .317 .324
.094 .107 .120
.082 .094 .107
.465 .476 .486
.496 .507 .518
.527 .539 .551
Thumpr™ Exh. CB Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5031 5033 5035
297 305 313
241 249 257
140 148 157
.284 .291 .298
.093 .107 .120
.080 .093 .107
.426 .437 .447
.454 .466 .477
.483 .495 .507
Thumpr™ Exh. FW Rated Duration @ .006" Tappet Lift .875" Min. Dia.
5531 5533 5535
297 305 313
241 249 257
143 152 160
.297 .304 .311
.093 .107 .121
.080 .094 .107
.446 .456 .467
.475 .486 .498
.505 .517 .529
Thumpr™ Exh. CR5 Rated Duration @ .006" Tappet Lift .904" Min. Dia.
5831
297
241
149
.315
.094
.081
.473
.504
.536
5833
305
249
157
.322
.109
.094
.483
.515
.547
5835
313
257
165
.329
.123
.108
.494
.526
.559
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
NOSTALGIA PLUS™ HYDRAULICS Designed to mimic the sound of the great engines of the past while improving performance by applying today’s design techniques, these profiles are used in the Nostalgia Plus™ series to capture the essence of the factory muscle cars of the 60s and 70s. These profiles are slightly slower off the seat than the Xtreme Energy™ profiles but have excellent area under the curve for outstanding power. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE 5066 5067 5068 5069 5070 5071
Nostalgia Plus™ Rated Duration @ .006" Tappet Lift .842" Min. Dia.
258 265 276 283 286 293
DURATION IN DEGREES @ .050
@ .200
211 218 229 236 239 246
120 124 140 147 151 157
LOBE LIFT .284 .280 .312 .308 .322 .318
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
106°
110°
1.5
1.6
1.7
.048 .057 .078 .088 .095 .105
.036 .045 .064 .074 .081 .091
.426 .420 .468 .462 .483 .477
.454 .448 .499 .493 .515 .509
.483 .476 .530 .524 .547 .541
RACE HYDRAULICS These are the largest hydraulic designs COMP Cams® offers. With a minimum tappet diameter of .842" or larger needed, these designs are intended for all out racing only. The larger lobes (268° - 270° - 276° @ .050" duration) were designed with large cubic inch motors in mind in a high rpm envrionment. These lobes have smooth ramps to make it easier for the spring to control the valve. LOBE NUMBER
RATED DURATION
5195 5221 5196 5197 5198 5199
312-5 312-6 320-5 320-9 320-10 328-8
CAMSHAFT TYPE Race Hydraulics Rated Duration @ .006" Tappet Lift .842" Min. Dia.
426
DURATION IN DEGREES @ .050 260 260 268 268 270 276
@ .200 169 171 178 175 180 185
WWW.COMPCAMS.COM
LOBE LIFT .3600 .3530 .3600 .3530 .3675 .3675
TAPPET LIFT @ TDC 106° .128 .131 .143 .141 .147 .156
110° .114 .117 .129 .128 .133 .142
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .540 .530 .540 .530 .551 .551
1.6 .576 .565 .576 .565 .588 .588
1.7 .612 .600 .612 .600 .625 .625
HYDRAULIC FLAT TAPPET
Designed to maximize torque, acceleration and throttle response while providing excellent high rpm horsepower. A faster intake valve opening increases engine vacuum and enhances throttle response. Special intake closing ramps close the valve sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. Faster ramps achieve maximum velocity sooner, increasing the area under the lift curve and providing maximum horsepower. Smoother exhaust designs allow for a more effective purge of spent gases from the combustion chamber to further increase horsepower. LOBE NUMBER
RATED DURATION
Xtreme Energy™ Int. Lobes Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5437 5440 5430 5441 5431 5442 5432 5443 5433 5444 5414 5445 5435 5446 5447 5418 5448 5438 5449 5439 5419
240 250 250 256 256 262 262 268 268 270 270 274 274 278 284 288 290 294 294 298 298
@ .050 196 206 206 212 212 218 218 224 224 226 226 230 230 234 240 244 246 250 250 254 254
@ .200 106 117 114 124 120 130 128 137 134 139 136 143 140 147 153 157 159 163 163 167 166
.275 .288 .277 .298 .283 .308 .297 .318 .303 .321 .303 .325 .303 .332 .338 .335 .344 .360 .346 .360 .338
106° .026 .041 .041 .050 .050 .060 .060 .070 .070 .073 .073 .080 .080 .087 .097 .104 .108 .115 .115 .122 .122
110° .018 .030 .030 .038 .038 .047 .047 .056 .056 .060 .060 .066 .066 .073 .084 .091 .094 .101 .101 .108 .108
1.5 .413 .432 .416 .447 .425 .462 .446 .477 .455 .482 .455 .488 .455 .498 .507 .503 .516 .540 .519 .540 .507
1.6 .440 .461 .443 .477 .453 .493 .475 .509 .485 .514 .485 .520 .485 .531 .541 .536 .550 .576 .554 .576 .541
1.7 .468 .490 .471 .507 .481 .524 .505 .541 .515 .546 .515 .553 .515 .564 .575 .570 .585 .612 .588 .612 .575
Xtreme Energy™ Exh. Lobes Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5207 5205 5230 5232 5212 5201 5202 5203 5216 5208 5238 5214 5209 5210 5231 5234 5233
260 260 268 268 268 270 270 280 280 286 286 292 296 305 308 316 316
212 212 218 218 222 224 224 230 230 236 236 244 246 253 256 264 264
121 117 128 124 130 133 132 140 138 144 143 154 154 160 165 170 173
.296 .280 .303 .285 .309 .313 .300 .320 .306 .327 .306 .334 .340 .350 .350 .285 .353
.050 .050 .059 .059 .064 .067 .068 .078 .078 .085 .086 .100 .101 .111 .120 .132 .133
.040 .040 .048 .047 .052 .056 .056 .065 .066 .072 .073 .087 .088 .098 .106 .118 .120
.444 .420 .455 .428 .464 .470 .450 .480 .459 .491 .459 .501 .510 .525 .525 .428 .530
.474 .448 .485 .456 .494 .501 .480 .512 .490 .523 .490 .534 .544 .560 .560 .456 .565
.503 .476 .515 .485 .525 .532 .510 .544 .520 .556 .520 .568 .578 .595 .595 .485 .600
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
1.800.999.0853
HYDRAULIC FLAT TAPPET
XTREME ENERGY™ HYDRAULICS
427
HYDRAULIC FLAT TAPPET
HYDRAULIC FLAT TAPPET XTREME ENERGY XFI™ HYDRAULICS The Xtreme Energy XFI™ series is designed for use with modern induction systems, heads, springs and rockers. The XFI™ intake lobes have more lift than the base Xtreme series, and the XFI™ exhaust lobes have more area under the curve, for better exhaust flow, than the base exhaust series. These are the first hydraulic flat tappet profiles designed for use with COMP Cams® Beehive™ Ovate Valve Springs, such as the #26915, #26918 and #26120. The combination of these profiles, the Beehive™ Springs, and our Ultra Pro Magnum™ Rocker Arms in higher ratios, makes for the most revolutionary improvement in hydraulic flat tappet design to date by bringing race winning technology to the street. LOBE NUMBER
RATED DURATION
Xtreme XFI™ Int. Lobes Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5082 5083 5084 5085 5086 5087 5088 5089 5090
252 256 260 262 268 274 280 286 292
@ .050 208 212 216 218 224 230 236 242 248
@ .200 121 125 129 131 138 143 150 156 162
.298 .305 .312 .315 .325 .336 .345 .355 .365
106° .044 .050 .056 .060 .070 .081 .091 .102 .112
110° .032 .038 .044 .047 .057 .067 .077 .088 .098
1.5 .447 .458 .468 .473 .488 .504 .518 .533 .548
1.6 .477 .488 .499 .504 .520 .538 .552 .568 .584
1.7 .507 .519 .530 .536 .553 .571 .587 .604 .621
Xtreme XFI™ Exh. Lobes Rated Duration @ .006" Tappet Lift .842" Min. Dia.
5101 5103 5105 5107 5109
266 272 280 290 302
217 223 231 241 253
127 134 143 154 166
.295 .308 .322 .342 .362
.059 .068 .082 .099 .120
.047 .056 .068 .085 .106
.443 .462 .483 .513 .543
.472 .493 .515 .547 .579
.502 .524 .547 .581 .615
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
PURPLE PLUS HYDRAULICS (0.904" MIN. TAPPET) These use the same ramps as our Nostalgia Plus™ lobes but have more velocity for use with Chrysler/Mopar .904" minimum tappet diameters. LOBE NUMBER
RATED DURATION
6882 6883 6884 6885 6886 6887
280 287 284 291 292 299
CAMSHAFT TYPE Purple Plus Rated Duration @ .006" Tappet Lift .904" Min. Dia.
DURATION IN DEGREES @ .050 233 240 239 246 247 254
@ .200 148 153 154 159 163 169
LOBE LIFT .316 .316 .323 .323 .339 .339
TAPPET LIFT @ TDC 106° .086 .096 .097 .107 .111 .123
110° .071 .082 .082 .092 .097 .108
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .474 .474 .485 .485 .509 .509
1.6 .506 .506 .517 .517 .542 .542
1.7 .537 .537 .549 .549 .576 .576
XTREME MOPAR HYDRAULICS (0.904" MIN. TAPPET) Xtreme Energy™ designs optimized for use with .904" minimum tappet diameters. The additional velocity allowed with the Chrysler/Mopar .904" tappet results in more area and more lift than any of our other comparable hydraulic designs. These are the best large tappet hydraulics ever. LOBE NUMBER
RATED DURATION
Xtreme Mopar Int. Lobes Rated Duration @ .006" Tappet Lift .904" Min. Dia.
5964 5965 5960 5961 5966
275 285 289 295 295
@ .050 231 241 245 251 251
@ .200 149 159 163 169 169
.350 .363 .356 .356 .376
106° .083 .101 .109 .120 .120
110° .069 .087 .094 .105 .105
1.5 .525 .545 .534 .534 .564
1.6 .560 .581 .570 .570 .602
1.7 .595 .617 .605 .605 .639
Xtreme Mopar Exh. Lobes Rated Duration @ .006" Tappet Lift .904" Min. Dia.
5984 5985 5980 5981 5986
287 297 301 307 307
237 247 251 257 257
151 161 166 171 171
.350 .363 .360 .360 .376
.090 .107 .115 .126 .126
.076 .093 .101 .111 .111
.525 .545 .540 .540 .564
.560 .581 .576 .576 .602
.595 .617 .612 .612 .639
CAMSHAFT TYPE
428
DURATION IN DEGREES
WWW.CAMHELP.COM
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
HYDRAULIC ROLLER
HIGH ENERGY™ & MAGNUM HYDRAULIC ROLLERS - LOW & HIGH LIFT The low lift profiles were designed for street and marine use. The low lift adds dependability and reliability for extended use applications. The high lift versions of the hydraulic rollers are designed for all out applications where high lift is desired because of cylinder head or engine modifications. They function well for street/strip. These lobes run well in big cubic inch marine engines. LOBE NUMBER
RATED DURATION
Hydraulic Roller Low Lift Rated Duration @ .006" Tappet Lift
3100 3101 3102 3103 3104 3105 3106 3160 3050 3168 3161 3051 3162 3052 3163 3053 3164
230 240 242 246 254 256 262 266 264 273 276 274 292 284 302 296 312
@ .050 178 188 191 192 199 200 206 210 210 215 220 220 230 230 240 240 250
@ .200 93 103 97 110 116 118 116 116 127 119 123 134 128 142 135 148 142
.2700 .2850 .2600 .3000 .3000 .3100 .3000 .2853 .3200 .2853 .2853 .3200 .2853 .3200 .2853 .3200 .2853
106° .014 .022 .024 .024 .032 .035 .041 .047 .047 .052 .060 .061 .075 .077 .090 .091 .104
110° .009 .015 .017 .017 .024 .026 .032 .037 .037 .041 .049 .050 .064 .064 .078 .078 .092
1.5 .405 .428 .390 .450 .450 .465 .450 .428 .480 .428 .428 .480 .428 .480 .428 .480 .428
1.6 .432 .456 .416 .480 .480 .496 .480 .456 .512 .456 .456 .512 .456 .512 .456 .512 .456
1.7 .459 .485 .442 .510 .510 .527 .510 .485 .544 .485 .485 .544 .485 .544 .485 .544 .485
Hydraulic Roller High Lift Rated Duration @ .006" Tappet Lift
3118 3107 3108 3114 3109 3110 3119 3112 3111 3122 3113 3150 3120 3115 3170 3151 3116 3171 3152 3117
260 266 270 281 276 284 280 290 286 290 304 307 304 304 315 318 314 325 329 324
206 210 215 220 220 224 224 230 230 236 242 244 244 244 248 252 252 258 262 262
126 130 133 134 138 136 144 143 152 160 158 158 161 164 161 164 169 169 172 177
.3330 .3330 .3330 .3200 .3400 .3330 .3500 .3400 .3735 .3800 .3670 .3600 .3830 .4000 .3600 .3600 .4000 .3600 .3600 .4200
.041 .047 .055 .060 .060 .066 .066 .075 .078 .091 .101 .100 .101 .104 .105 .111 .115 .122 .127 .130
.032 .037 .044 .048 .049 .054 .054 .063 .065 .076 .087 .087 .087 .090 .091 .097 .100 .108 .113 .115
.500 .500 .500 .480 .510 .500 .525 .510 .560 .570 .551 .540 .575 .600 .540 .540 .600 .540 .540 .630
.533 .533 .533 .512 .544 .533 .560 .544 .598 .608 .587 .576 .613 .640 .576 .576 .640 .576 .576 .672
.566 .566 .566 .544 .578 .566 .595 .578 .635 .646 .624 .612 .651 .680 .612 .612 .680 .612 .612 .714
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
1.800.999.0853
HYDRAULIC ROLLER
HYDRAULIC ROLLER
429
HYDRAULIC ROLLER
HYDRAULIC ROLLER Thumpr™ Hydraulic Rollers The Thumpr™ lobe profiles are designed to optimize the character and sound, while providing excellent stability and a very wide power range in hydraulic roller applications. Specific profiles are developed uniquely for intake and exhaust. LOBE NUMBER
RATED DURATION
3028 3022 3024 3026 3056 3058
275 283 291 299 307 315
@ .050 219 227 235 243 251 259
@ .200 134 142 150 157 165 173
.335 .341 .347 .354 .361 .368
106° .058 .070 .082 .096 .110 .125
110° .047 .058 .070 .082 .096 .110
1.5 .503 .512 .521 .531 .542 .552
1.6 .536 .546 .555 .566 .578 .589
1.7 .570 .580 .590 .602 .614 .626
3528 3532 3534 3536
275 283 291 299
219 227 235 243
133 140 148 156
.325 .331 .337 .344
.058 .070 .082 .096
.047 .058 .070 .082
.488 .497 .506 .516
.520 .530 .539 .550
.553 .563 .573 .585
3552 3554 3556
283 291 299
227 235 243
139 146 154
.321 .327 .334
.070 .082 .096
.058 .070 .082
.482 .491 .501
.514 .523 .534
.546 .556 .568
3031 3043 3045 3047
295 303 311 319
233 241 249 257
142 149 157 165
.325 .331 .338 .345
.082 .094 .107 .120
.070 .082 .094 .107
.488 .497 .507 .518
.520 .530 .541 .552
.553 .563 .575 .587
3541 3543 3545 3547
295 303 311 319
233 241 249 257
139 147 155 164
.315 .321 .328 .335
.082 .094 .107 .120
.070 .082 .094 .107
.473 .482 .492 .503
.504 .514 .525 .536
.536 .546 .558 .570
3563 3565 3567
303 311 319
241 249 257
145 153 161
.311 .318 .325
.094 .106 .119
.082 .093 .106
.467 .477 .488
.498 .509 .520
.529 .541 .553
CAMSHAFT TYPE
Thumpr™ Int. Rated Duration @ .006" Tappet Lift
Thumpr™ Exh. Rated Duration @ .006" Tappet Lift
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
XTREME ENERGY™ HYDRAULIC ROLLERS These designs share all of the characteristics of the flat tappet lobes plus have the CRC (Constant Radius of Curvature) inverted radius of curvature ramp designs. COMP Cams® has enhanced this technique to ensure durability with these most aggressive hydraulic roller designs. The high lift versions that have lobe numbers in the 3100’s are more aggressive over the nose and will require more spring or less rpm. These lobes run well in street/strip and marine applications. With more agressive and faster ramps, they also provide good vacuum. LOBE NUMBER
RATED DURATION
3322 3323 3304 3310 3305 3302 3311 3188 3300 3312 3301 3190
244 249 252 252 256 258 258 258 262 264 266 266
CAMSHAFT TYPE
Xtreme Energy™ Rated Duration @ .006" Tappet Lift Small Block Journal
430
DURATION IN DEGREES @ .050 192 198 200 200 204 206 206 206 210 212 214 214
@ .200 89 104 113 122 116 124 128 132 126 133 129 141
WWW.COMPCAMS.COM
LOBE LIFT .245 .265 .285 .315 .285 .305 .320 .336 .305 .325 .305 .353
TAPPET LIFT @ TDC 106° .026 .032 .034 .034 .039 .041 .041 .042 .046 .049 .052 .053
110° .018 .024 .026 .026 .030 .032 .032 .032 .036 .039 .041 .042
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .368 .398 .428 .473 .428 .458 .480 .504 .458 .488 .458 .530
1.6 .392 .424 .456 .504 .456 .488 .512 .538 .488 .520 .488 .565
1.7 .417 .451 .485 .536 .485 .519 .544 .571 .519 .553 .519 .600
HYDRAULIC ROLLER
LOBE NUMBER
RATED DURATION
Xtreme Energy™ Rated Duration @ .006" Tappet Lift Small Block Journal
3313 3314 3192 3315 3194 3316 3196 3317 3318 3319
270 276 276 282 282 288 288 294 300 306
@ .050 218 224 224 230 230 236 236 242 248 254
@ .200 139 145 152 151 157 157 162 164 171 178
.330 .335 .378 .340 .389 .347 .390 .360 .375 .387
106° .058 .068 .069 .078 .078 .089 .090 .101 .114 .127
110° .046 .055 .056 .064 .064 .075 .075 .086 .097 .110
1.5 .495 .503 .567 .510 .584 .521 .585 .540 .563 .581
1.6 .528 .536 .605 .544 .622 .555 .624 .576 .600 .619
1.7 .561 .570 .643 .578 .661 .590 .663 .612 .638 .658
Xtreme Energy™ Rated Duration @ .006" Tappet Lift Big Block Journal
3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3414 3415
252 258 264 270 276 282 288 294 300 306 310 312
200 206 212 218 224 230 236 242 248 254 258 260
118 123 127 131 136 141 147 155 162 170 173 174
.300 .300 .300 .300 .300 .300 .306 .318 .329 .341 .341 .341
.034 .042 .050 .058 .068 .078 .089 .100 .111 .123 .130 .133
.026 .032 .039 .047 .055 .065 .075 .085 .096 .108 .115 .118
.450 .450 .450 .450 .450 .450 .459 .477 .494 .512 .512 .512
.480 .480 .480 .480 .480 .480 .490 .509 .526 .546 .546 .546
.510 .510 .510 .510 .510 .510 .520 .541 .559 .580 .580 .580
Xtreme Energy™ Rated Duration @ .006" Tappet Lift Ford Journal
3628 3610 3630 3611 3612 3632 3633 3613 3634 3635 3636 3637 3638
256 264 266 270 276 274 278 288 282 286 290 294 298
208 212 216 218 224 224 228 230 232 236 240 244 248
133 131 140 136 140 148 152 144 155 159 162 166 169
.333 .320 .340 .320 .320 .347 .352 .320 .353 .356 .359 .362 .365
.044 .050 .056 .058 .068 .069 .076 .078 .084 .092 .099 .107 .115
.033 .039 .044 .047 .055 .056 .062 .065 .069 .076 .084 .091 .099
.500 .480 .510 .480 .480 .521 .528 .480 .530 .534 .539 .543 .548
.533 .512 .544 .512 .512 .555 .563 .512 .565 .570 .574 .579 .584
.566 .544 .578 .544 .544 .590 .598 .544 .600 .605 .610 .615 .621
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
HYDRAULIC ROLLER
XTREME ENERGY™ HYDRAULIC ROLLERS cont. THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
XTREME 4X4™ HYDRAULIC ROLLERS Due to the allowances of lower engine speed, these designs are slightly faster than the original Xtreme Energy™ Hydraulic Rollers. Great low and midrange torque. They are some of our most aggressive hydraulic roller lobes and run well in street, off-road and four-wheeling. LOBE NUMBER
RATED DURATION
3324 3326 3303 3306 3307 3308 3309
259 263 265 269 273 279 283
CAMSHAFT TYPE Xtreme 4X4 Rated Duration @ .006" Tappet Lift Small Block Journal
DURATION IN DEGREES @ .050 210 214 216 220 224 230 234
@ .200 131 134 136 138 141 145 148
LOBE LIFT .316 .316 .316 .316 .316 .316 .316
TAPPET LIFT @ TDC 106° .047 .052 .056 .062 .069 .079 .087
110° .036 .041 .044 .049 .056 .065 .072
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .474 .474 .474 .474 .474 .474 .474
1.6 .506 .506 .506 .506 .506 .506 .506
1.800.999.0853
1.7 .537 .537 .537 .537 .537 .537 .537
431
HYDRAULIC ROLLER
HYDRAULIC ROLLER XTREME ENERGY XFI™ HYDRAULIC ROLLERS The Xtreme Energy XFI™ Series is designed for use with modern induction systems, heads, springs and rockers. The XFI™ intake lobes have more lift than the base Xtreme series, and the XFI™ exhaust lobes have more area under the curve, for better exhaust flow, than the base exhaust series. These are designed for use with COMP Cams® Beehive™ Ovate Valve Springs such as the #26915, #26918 & #26120. The combination of these profiles, the Beehive™ Springs, and our Ultra Pro Magnum™ Rocker Arms in higher ratios, makes for the most revolutionary improvement in hydraulic roller design to date by bringing race winning technology to the street. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE
DURATION IN DEGREES @ .050
@ .200
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
106°
110°
1.5
1.6
1.7
Xtreme XFI™ Int. Lobes Rated Duration @ .006" Tappet Lift Hydraulic Roller
3010 3011 3012 3013 3014 3015 3016 3017 3018
252 256 260 264 268 274 280 286 292
202 206 210 214 218 224 230 236 242
128 132 136 139 143 149 154 159 165
.344 .347 .350 .353 .356 .358 .360 .362 .365
.036 .041 .047 .052 .058 .068 .079 .090 .102
.027 .032 .036 .041 .047 .055 .065 .075 .087
.516 .521 .525 .530 .534 .537 .540 .543 .548
.550 .555 .560 .565 .570 .573 .576 .579 .584
.585 .590 .595 .600 .605 .609 .612 .615 .621
Xtreme XFI™ Exh. Lobes Rated Duration @ .006" Tappet Lift Hydraulic Roller
3033 3034 3035 3036 3037 3038 3039
264 270 276 282 288 294 300
212 218 224 230 236 242 248
135 141 147 152 158 163 169
.341 .347 .353 .355 .357 .360 .362
.050 .059 .069 .080 .091 .102 .114
.040 .048 .056 .066 .076 .087 .098
.512 .521 .530 .533 .536 .540 .543
.546 .555 .565 .568 .571 .576 .579
.580 .590 .600 .604 .607 .612 .615
XTREME MARINE™ HYDRAULIC ROLLERS The These profiles use the same design techniques of the base Xtreme Energy™ Hydraulic Rollers but have been optimized to increase power and durability when run at steady rpm for extended periods of time. Specifically designed for big blocks with heavier valve train components. LOBE NUMBER
RATED DURATION
3354 3355 3356 3357 3358 3359 3362 3363 3364
286 292 298 304 310 316 322 328 334
CAMSHAFT TYPE
Xtreme Marine™ Rated Duration @ .006" Tappet Lift Big Block Journal
432
DURATION IN DEGREES @ .050 230 236 242 248 254 260 266 272 278
WWW.CAMHELP.COM
@ .200 142 146 153 159 163 169 174 179 185
LOBE LIFT .322 .322 .333 .333 .338 .338 .342 .347 .353
TAPPET LIFT @ TDC 106° .074 .085 .095 .106 .116 .126 .136 .146 .155
110° .062 .071 .081 .092 .101 .112 .122 .132 .142
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .483 .483 .500 .500 .507 .507 .513 .521 .530
1.6 .515 .515 .533 .533 .541 .541 .547 .555 .565
1.7 .547 .547 .566 .566 .575 .575 .581 .590 .600
HYDRAULIC ROLLER
These have the same ramp designs as the lower lift Xtreme Marine™ designs but have higher lift to enhance power output with cylinder head and engine modifications. LOBE NUMBER
RATED DURATION
3473 3474 3410 3475 3376 3411 3479 3370 3377 3371 3372 3373 3374 3375 3447
290 292 294 294 296 300 300 304 306 308 314 318 322 326 330
CAMSHAFT TYPE
Xtreme Marine High Lift Rated Duration @ .006" Tappet Lift Big Block Journal
DURATION IN DEGREES @ .050 234 236 238 238 240 244 244 248 250 254 258 262 266 270 274
@ .200 152 154 154 156 157 159 163 167 166 171 175 179 182 186 190
LOBE LIFT .360 .360 .350 .360 .360 .350 .380 .380 .360 .380 .380 .380 .380 .380 .380
TAPPET LIFT @ TDC 106° .081 .085 .088 .088 .092 .099 .100 .107 .111 .119 .126 .134 .142 .149 .157
110° .068 .071 .075 .075 .078 .085 .085 .092 .096 .103 .111 .118 .126 .134 .141
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .540 .540 .525 .540 .540 .525 .570 .570 .540 .570 .570 .570 .570 .570 .570
1.6 .576 .576 .560 .576 .576 .560 .608 .608 .576 .608 .608 .608 .608 .608 .608
1.7 .612 .612 .595 .612 .612 .595 .646 .646 .612 .646 .646 .646 .646 .646 .646
HYDRAULIC ROLLER
XTREME MARINE™ HYDRAULIC ROLLERS − HIGH LIFT
HUC HYDRAULIC ROLLER SERIES The HUC series hydraulic rollers are very smooth designs intended for high rpm use with heavy valves. These are very similar to the Xtreme Marine™ High Lift Lobe series but are slightly more stable. LOBE NUMBER
RATED DURATION
HUC Rated Duration @ .006" Tappet Lift
13050 13052 13053 13054 13056
@ .006 294 302 306 310 318
@ .050 239 247 251 255 263
@ .200 158 166 169 173 181
HUC High Lift Rated Duration @ .006" Tappet Lift
13064 13066 13068
310 318 326
255 263 271
175 183 190
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
0.365 0.372 0.372 0.372 0.372
106° .093 .108 .115 .123 .139
110° .079 .093 .100 .108 .123
1.6 .584 .595 .595 .595 .595
1.7 .621 .632 .632 .632 .632
1.8 .657 .670 .670 .670 .670
0.400 0.400 0.400
.124 .140 .156
.108 .124 .140
.640 .640 .640
.680 .680 .680
.720 .720 .720
1.800.999.0853
433
HYDRAULIC ROLLER
HYDRAULIC ROLLER XTREME RPM FOR LS1 Designed with Xtreme Energy™ technology to provide excellent power with the LS1’s enhanced cylinder head design and high rpm performance. These provide outstanding low rpm torque with increased stability when coupled with the LS1’s larger base circle and 1.7:1+ rocker ratios. High lift versions are excellent for use with improved heads and manifolds. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE
Xtreme RPM for LS1 Rated Duration @ .006" Tappet Lift LS1 55mm Journal
Xtreme RPM for LS1 High Lift Rated Duration @ .006" Tappet Lift LS1 55mm Journal
434
DURATION IN DEGREES @ .200 121 126 130 132 134 137 139 141 142 144 147 166
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
3750 3751 3766 3752 3767 3753 3754 3755 3735 3756 3757 3659
260 266 270 272 274 278 280 282 284 286 290 309
@ .050 206 212 216 218 220 224 226 228 230 232 236 256
3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3706 3705 3652 3653 3654 3655 3656 3657 3658 3660 3661
261 263 265 267 269 271 273 275 277 279 281 283 285 287 289 291 293 295 297 299 301 303 305 307
208 210 212 214 216 218 220 222 224 226 228 230 232 234 236 238 240 242 244 246 248 250 252 254
128 129 131 133 135 136 138 140 142 143 145 147 148 150 152 154 156 158 160 162 164 166 168 169
.326 .327 .328 .329 .330 .331 .332 .333 .334 .335 .336 .337 .338 .339 .340 .344 .346 .348 .350 .350 .350 .350 .350 .350
.045 .048 .051 .054 .056 .059 .062 .066 .069 .072 .075 .079 .082 .086 .089 .093 .096 .100 .103 .107 .111 .114 .118 .122
.036 .039 .041 .043 .045 .048 .051 .054 .056 .059 .062 .066 .069 .072 .075 .079 .082 .085 .089 .092 .097 .100 .103 .107
.489 .491 .492 .494 .495 .497 .498 .500 .501 .503 .504 .506 .507 .509 .510 .516 .519 .522 .525 .525 .525 .525 .525 .525
.522 .523 .525 .526 .528 .530 .531 .533 .534 .536 .538 .539 .541 .542 .544 .550 .554 .557 .560 .560 .560 .560 .560 .560
.554 .556 .558 .559 .561 .563 .564 .566 .568 .570 .571 .573 .575 .576 .578 .585 .588 .592 .595 .595 .595 .595 .595 .595
3662 3663 3666 3667 3668
309 311 315 319 323
256 258 262 266 270
170 172 174 177 180
.350 .350 .350 .350 .350
.125 .129 .135 .141 .147
.110 .114 .120 .127 .133
.525 .525 .525 .525 .525
.560 .560 .560 .560 .560
.595 .595 .595 .595 .595
WWW.COMPCAMS.COM
.302 .306 .308 .310 .312 .314 .315 .316 .317 .318 .320 .325
106° .043 .051 .056 .059 .062 .069 .072 .075 .078 .082 .088 .123
110° .034 .040 .045 .048 .051 .056 .059 .062 .065 .069 .075 .109
1.5 .453 .459 .462 .465 .468 .471 .473 .474 .476 .477 .480 .488
1.6 .483 .490 .493 .496 .499 .502 .504 .506 .507 .509 .512 .520
1.7 .513 .520 .524 .527 .530 .534 .536 .537 .539 .541 .544 .553
HYDRAULIC ROLLER
The XE-R designs are our most aggressive hydraulic roller ramps to date. They are quicker off and on the seat than the original Xtreme Energy™ series, yet they are still stable with rigid valve train and optimized spring selection. These profiles provide even more area than the comparable Small Block Chevrolet designs that are often used by other companies to “grow” a more aggressive lobe for LS1 applications. LOBE NUMBER
RATED DURATION
3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734
@ .006 269 271 273 275 277 279 281 283 285 287 289 291 293 295 297
CAMSHAFT TYPE
XE-R for LS1 Rated Duration @ .006" Tappet Lift LS1 55mm Journal
DURATION IN DEGREES @ .050 220 222 224 226 228 230 232 234 236 238 240 242 244 246 248
@ .200 143 144 146 147 149 151 153 155 157 159 161 163 165 167 169
LOBE LIFT 0.342 0.342 0.342 0.344 0.346 0.348 0.350 0.352 0.354 0.356 0.358 0.359 0.360 0.361 0.362
TAPPET LIFT @ TDC 106° .062 .065 .069 .073 .076 .080 .083 .087 .091 .095 .099 .102 .106 .110 .114
110° .049 .052 .055 .059 .062 .065 .069 .072 .076 .079 .083 .087 .091 .095 .098
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .513 .513 .513 .516 .519 .522 .525 .528 .531 .534 .537 .539 .540 .542 .543
1.6 .547 .547 .547 .550 .554 .557 .560 .563 .566 .570 .573 .574 .576 .578 .579
1.7 .581 .581 .581 .585 .588 .592 .595 .598 .602 .605 .609 .610 .612 .614 .615
HYDRAULIC ROLLER
XTREME ENERGY™ XE-R FOR LS1
XTREME ENERGY™ LSL HYDRAULIC ROLLERS FOR LS1 The LSL series has been designed with enhanced characteristics from our latest professional drag racing profiles. These have excellent ramp quickness but are designed in a way to improve stability over other designs with such short seat timing. The increased lift works great with the latest Gen III and LS cylinder head port designs by providing excellent area above 1/2-inch valve lift. LOBE NUMBER
RATED DURATION
13014 13015 13016 13017 13018 13019 13020 13021 13022 13023 13024 13025 13026 13027 13028 13029
265 269 273 277 281 285 289 293 297 301 305 309 313 317 321 325
CAMSHAFT TYPE
LSL for LS1 Rated Duration @ .006" Tappet Lift LS1 55mm Journal
DURATION IN DEGREES @ .050 215 219 223 227 231 235 239 243 247 251 255 259 263 267 271 275
@ .200 139 143 147 151 154 158 162 166 169 173 176 180 183 187 190 193
LOBE LIFT 0.355 0.357 0.359 0.361 0.363 0.365 0.367 0.367 0.367 0.367 0.367 0.367 0.367 0.367 0.367 0.367
TAPPET LIFT @ TDC 106° .054 .060 .067 .074 .081 .089 .096 .105 .113 .121 .129 .137 .145 .153 .160 .167
110° .042 .048 .054 .060 .067 .074 .081 .089 .097 .105 .113 .121 .129 .137 .144 .151
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .568 .571 .574 .578 .581 .584 .587 .587 .587 .587 .587 .587 .587 .587 .587 .587
1.7 .604 .607 .610 .614 .617 .621 .624 .624 .624 .624 .624 .624 .624 .624 .624 .624
1.800.999.0853
1.8 .639 .643 .646 .650 .653 .657 .661 .661 .661 .661 .661 .661 .661 .661 .661 .661
435
HYDRAULIC ROLLER
HYDRAULIC ROLLER XTREME ENERGY™ LSK HYDRAULIC ROLLERS FOR LS1 The LSK series has been designed with enhanced characteristics from our latest professional drag racing profiles. These have excellent ramp quickness. They are VERY hard on parts and not recommended in street applications! LOBE NUMBER
RATED DURATION
2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136
265 269 273 277 281 285 289 293 297 301 305 309 313
CAMSHAFT TYPE
LSK for LS1 Rated Duration @ .006" Tappet Lift LS1 55mm Journal
DURATION IN DEGREES @ .050 215 219 223 227 231 235 239 243 247 251 255 259 263
@ .200 142 145 149 153 156 160 164 168 171 175 179 183 186
LOBE LIFT 0.370 0.372 0.374 0.376 0.378 0.380 0.382 0.384 0.386 0.388 0.390 0.390 0.390
TAPPET LIFT @ TDC 106° .054 .060 .066 .074 .081 .089 .096 .104 .113 .121 .130 .138 .146
110° .042 .048 .054 .060 .067 .074 .081 .089 .096 .104 .113 .121 .129
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .592 .595 .598 .602 .605 .608 .611 .614 .618 .621 .624 .624 .624
1.6 .629 .632 .636 .639 .643 .646 .649 .653 .656 .660 .663 .663 .663
1.7 .666 .670 .673 .677 .680 .684 .688 .691 .695 .698 .702 .702 .702
LSN & LSD SERIES FOR DOD These two series are designed for GM LS applications with Displacement on Demand. Because of extra travel of the deactivation lifter seat before it locks in lock mode, these profiles must be designed differently than the non-cylinder deactivation lobes. The result is that the LSD "Deac" profiles look more like solid lifter profiles as that motion is akin to about 0.005" lash at the tappet. The LSN "non-Deac" profiles are more like standard hydraulic roller designs at the seat but matched to the LSN profiles over the nose. Note: Cylinders 1-4-6-7 are the "Deac" or Deactivation cylinders and 2-3-5-6 are the "non-Deac" cylinders. LOBE NUMBER
RATED DURATION
LSN (Non-Deac) Rated Duration @ .006" Tappet Lift 55mm Journal .7756" BCR
13300 13301 13302 13303 13304 13305 13306 13307
@ .006 262 266 270 274 278 282 286 290
@ .050 210 214 218 222 226 230 234 238
@ .200 123 126 130 133 137 140 144 147
0.294 0.294 0.294 0.294 0.294 0.294 0.294 0.294
106° .047 .053 .059 .065 .072 .079 .086 .092
110° .037 .042 .048 .053 .059 .065 .072 .079
1.6 .470 .470 .470 .470 .470 .470 .470 .470
1.7 .500 .500 .500 .500 .500 .500 .500 .500
1.8 .529 .529 .529 .529 .529 .529 .529 .529
LSD (Deac) Rated Duration @ .006" Tappet Lift 55mm Journal .7756" BCR
13310 13311 13312 13313 13314 13315 13316 13317 13318
274 278 282 286 290 294 298 302 306
212 216 220 224 228 232 236 240 244
123 127 130 133 137 140 144 147 151
0.294 0.294 0.294 0.294 0.294 0.294 0.294 0.294 0.294
.047 .053 .059 .065 .072 .079 .086 .092 .099
.037 .042 .048 .053 .059 .065 .072 .079 .085
.470 .470 .470 .470 .470 .470 .470 .470 .470
.500 .500 .500 .500 .500 .500 .500 .500 .500
.529 .529 .529 .529 .529 .529 .529 .529 .529
CAMSHAFT TYPE
436
DURATION IN DEGREES
WWW.CAMHELP.COM
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
HYDRAULIC ROLLER
The Cheater HR Lift Rule profiles can be run with either hydraulic roller lifters or with solid roller lifters and tight (0.010" to 0.016") lash settings. These are very popular in Mustang lift rule class racing. These lobes are very aggressive and are "race only" designed lobes. LOBE NUMBER
RATED DURATION
3390 3391 3392 3393 3394 3395 3396 3397 3335 3336 3338 3337 3339 3284 3282 3285 3283 3299 3297 3298 3295 3296 3404 3400 3398 3384 3399 3385 3386 3387 3388 3389 3405 3288 3286 3289 3287
289 291 293 295 297 299 301 303 321 307 311 319 329 307 311 319 323 289 297 305 297 301 285 289 293 297 301 305 309 313 317 321 325 307 311 319 323
CAMSHAFT TYPE
Cheater HR Rated Duration @ .006" Tappet Lift RACE ONLY
DURATION IN DEGREES @ .050 236 238 240 242 244 246 248 250 268 254 258 266 270 254 258 266 270 236 244 252 244 248 232 236 240 244 248 252 256 260 264 268 272 254 258 266 270
@ .200 148 150 152 154 156 158 160 162 180 166 170 178 182 167 171 179 183 150 158 166 159 163 147 151 155 159 163 167 171 175 179 183 187 171 175 183 187
LOBE LIFT .312 .312 .312 .312 .312 .312 .312 .312 .312 .316 .316 .316 .316 .323 .323 .323 .323 .329 .329 .329 .334 .334 .341 .341 .341 .341 .341 .341 .341 .341 .341 .341 .341 .365 .365 .365 .365
TAPPET LIFT @ TDC 106° .085 .088 .091 .095 .098 .102 .105 .109 .142 .116 .123 .138 .146 .116 .124 .139 .146 .085 .098 .113 .099 .106 .078 .085 .091 .098 .106 .113 .120 .128 .136 .143 .151 .118 .125 .141 .149
110° .072 .075 .078 .081 .085 .088 .091 .095 .127 .102 .109 .123 .139 .102 .109 .124 .131 .072 .085 .098 .085 .092 .065 .072 .078 .085 .091 .098 .106 .113 .120 .128 .136 .103 .110 .125 .133
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .468 .468 .468 .468 .468 .468 .468 .468 .468 .474 .474 .474 .474 .485 .485 .485 .485 .494 .494 .494 .501 .501 .512 .512 .512 .512 .512 .512 .512 .512 .512 .512 .512 .548 .548 .548 .548
1.6 .499 .499 .499 .499 .499 .499 .499 .499 .499 .506 .506 .506 .506 .517 .517 .517 .517 .526 .526 .526 .534 .534 .546 .546 .546 .546 .546 .546 .546 .546 .546 .546 .546 .584 .584 .584 .584
1.7 .530 .530 .530 .530 .530 .530 .530 .530 .530 .537 .537 .537 .537 .549 .549 .549 .549 .559 .559 .559 .568 .568 .580 .580 .580 .580 .580 .580 .580 .580 .580 .580 .580 .621 .621 .621 .621
HYDRAULIC ROLLER
CHEATER HR LIFT RULE COMPETITION HYDRAULIC ROLLERS
MUSTANG R LIFT RULE COMPETITION HYDRAULIC ROLLERS These are very similar to the Cheater HR series but more aggressive off the seat and provide more area. LOBE NUMBER
RATED DURATION
3329 3330 3331 3332 3333 3334
273 279 285 291 297 303
CAMSHAFT TYPE Mustang R Rated Duration @ .006" Tappet Lift RACE ONLY
DURATION IN DEGREES @ .050 224 230 236 242 248 254
@ .200 140 145 149 153 158 162
LOBE LIFT 0.312 0.312 0.312 0.312 0.312 0.312
TAPPET LIFT @ TDC 106° .069 .079 .090 .101 .111 .121
110° .056 .065 .076 .086 .097 .107
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .468 .468 .468 .468 .468 .468
1.6 .499 .499 .499 .499 .499 .499
1.800.999.0853
1.7 .530 .530 .530 .530 .530 .530
437
HYDRAULIC ROLLER
HYDRAULIC ROLLER XTREME HARLEY HYDRAULIC ROLLERS Designed to maximize torque, acceleration, and throttle response for V-Twins while providing excellent high rpm horsepower. A faster valve opening increases engine vacuum and enhances throttle response, providing improved roll on power. Special closing ramps close the valve sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. The faster Xtreme Energy™ ramps achieve maximum velocity sooner, increasing the area under the lift curve and providing maximum airflow and horsepower. LOBE NUMBER
DURATION IN DEGREES
CAMSHAFT TYPE
Xtreme Energy™ Rated Duration @ .053" Tappet Lift
@ .053 228 230 236 236 244 244 252 252 260 260 264 268 268 268 272 276
3822 3809 3810 3823 3832 3824 3833 3825 3834 3826 3816 3835 3827 3817 3818 3819
LOBE LIFT
@ .200 148 147 153 155 160 162 167 169 174 176 180 181 183 183 187 191
TAPPET LIFT @ TDC 98° .103 .106 .117 .118 .134 .134 .149 .149 .161 .163 .170 .174 .176 .177 .184 .191
.360 .346 .350 .360 .350 .360 .350 .360 .350 .360 .370 .350 .360 .370 .370 .370
102° .089 .091 .102 .103 .118 .118 .132 .132 .146 .147 .156 .160 .162 .162 .170 .176
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 106° .076 .079 .088 .089 .103 .103 .118 .118 .131 .133 .140 .146 .147 .147 .155 .162
1.625 .585 .562 .569 .585 .569 .585 .569 .585 .569 .585 .601 .569 .585 .601 .601 .601
1.65 .594 .571 .578 .594 .578 .594 .578 .594 .578 .594 .611 .578 .594 .611 .611 .611
Solid Flat Tappet HIGH ENERGY™ & MAGNUM SOLIDS The High Energy™ Solid is the mechanical version of the High Energy™ Hydraulic. Because these designs incorporate a mechanical (solid) lifter, the valve actuation is quicker than the High Energy™ Hydraulics, thus producing slightly more power than its hydraulic counterpart. The Magnum Solid Lifter series is designed to allow the valve lash to be varied from .015" to .030". This tuning tool can be used to fine tune any high performance application to a razor sharp edge. LOBE NUMBER
RATED DURATION
High Energy™ Rated Duration @ .015" Tappet Lift .842" Min. Dia.
5190 6114 6038
240-3 244-3 264-1
@ .050 190 200 220
@ .200 104 108 130
.266 .266 .293
106° .031 .031 .062
110° .023 .023 .050
1.5 .399 .399 .440
1.6 .426 .426 .469
1.7 .452 .452 .499
Magnum Rated Duration @ .015" Tappet Lift .842" Min. Dia.
6017 6002 6007 6003
270-3 282-2 294-3 306-5
224 236 248 260
135 145 154 164
.312 .330 .350 .370
.064 .082 .096 .119
.054 .069 .084 .100
.468 .495 .525 .555
.499 .528 .560 .592
.530 .561 .595 .629
CAMSHAFT TYPE
438
DURATION IN DEGREES
WWW.COMPCAMS.COM
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
SOLID FLAT TAPPET
Like the Nostalgia Plus™ Hydraulics, these lobes are designed to mimic the sound of the great engines of the past while improving performance by applying today's design techniques. The solid lifter design allows more precise valve control and allows further tuning through lash adjustment. When lashed at .015" these designs provide that distinct metallic, mechanical sound made famous be the most powerful of the great factory muscle cars. LOBE NUMBER
RATED DURATION
6068 6069 6070 6071
276 283 284 291
CAMSHAFT TYPE Nostalgia Plus Rated Duration @ .015" Tappet Lift .842" Min. Dia. ™
DURATION IN DEGREES @ .050 239 246 247 254
@ .200 149 155 158 164
LOBE LIFT .320 .317 .336 .332
TAPPET LIFT @ TDC 106° .094 .104 .108 .118
110° .080 .090 .094 .104
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .480 .476 .504 .498
1.6 .512 .507 .538 .531
1.7 .544 .539 .571 .564
XTREME ENERGY™ SOLIDS
SOLID FLAT TAPPET
NOSTALGIA PLUS™ SOLIDS
The Xtreme Energy™ Solids are designed with similar characteristics to the Xtreme Energy™ Hydraulics to maximize torque, acceleration, and throttle response while providing even more high rpm horsepower by taking advantage of the increased stability of a solid design. The Xtreme Energy™ Solids have ramps that provide shorter seat timing than all but the race solids but feature a special closing section to eliminate excessive noise. LOBE NUMBER
RATED DURATION
6052 6083 6053 6084 6054 6055 6056 6057 6089 6059 6091 6061
256 262 262 268 268 274 280 282 290 290 298 298
CAMSHAFT TYPE
Xtreme Energy™ Rated Duration @ .015" Tappet Lift .842" Min. Dia.
DURATION IN DEGREES @ .050 218 224 224 230 230 236 242 244 252 252 260 260
@ .200 129 135 135 140 141 147 153 156 164 164 171 172
LOBE LIFT .311 .313 .319 .313 .326 .335 .341 .347 .352 .361 .352 .373
TAPPET LIFT @ TDC 106° .057 .067 .067 .077 .077 .087 .097 .101 .115 .115 .129 .129
110° .046 .054 .054 .064 .064 .073 .083 .087 .101 .101 .155 .155
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .467 .470 .479 .470 .489 .503 .512 .521 .528 .542 .528 .560
1.6 .498 .501 .510 .501 .522 .536 .546 .555 .563 .578 .563 .597
1.7 .529 .532 .542 .532 .554 .570 .580 .590 .598 .614 .598 .634
Thumpr™ Solid Flat Tappet The Thumpr™ lobe profiles are designed to optimize the character and sound, while providing excellent stability and a very wide power range in solid flat tappet applications. Specific profiles are developed uniquely for the intake and exhaust. LOBE NUMBER CAMSHAFT TYPE
RATED DURATION
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
@ .015
@ .050
@ .200
106°
110°
1.43
1.5
1.6
1.7
Thumpr™ Intake Rated Duration @ .015" Tappet Lift .842" Min. Dia.
6440 6442 6444
268 276 284
231 239 247
140 148 156
.319 .326 .333
.079 .092 .106
.066 .079 .092
.456 .466 .476
.479 .489 .500
.510 .522 .533
.542 .554 .566
Thumpr™ Exhaust Rated Duration @ .015" Tappet Lift .842" Min. Dia.
6455 6457 6459
287 295 303
245 253 261
152 160 168
.313 .320 .327
.101 .115 .128
.088 .101 .115
.448 .458 .468
.470 .480 .491
.501 .512 .523
.532 .544 .556
1.800.999.0853
439
SOLID FLAT TAPPET
SOLID FLAT TAPPET HIGH TORQUE SOLIDS The High Torque Solid is designed to be used on .842" or larger tappet diameters. These are our most winning, all-around solid designs. Tappet acceleration rates are high to produce maximum torque vs. horsepower in an all out racing engine. Works well as exhaust when coupled with TL or XTQ intake designs. LOBE NUMBER
RATED DURATION
6015 6001 6014 6016 6009 6018 6000 6010 6004 6011 6005
270-1 280-1 285-1 290-1 295-1 300-1 305-1 310-1 310-2 320-1 320-2
CAMSHAFT TYPE
High Torque Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
DURATION IN DEGREES @ .050 235 242 250 255 260 265 270 275 270 283 280
@ .200 144 152 156 160 164 169 175 177 175 184 182
LOBE LIFT .330 .338 .355 .360 .370 .375 .385 .390 .375 .392 .375
TAPPET LIFT @ TDC 106° .082 .094 .104 .111 .119 .126 .136 .142 .143 .163 .156
110° .068 .080 .092 .098 .100 .113 .123 .129 .129 .149 .142
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .495 .507 .533 .540 .555 .563 .578 .585 .563 .588 .563
1.6 .528 .541 .568 .576 .592 .600 .616 .624 .600 .627 .600
1.7 .561 .575 .604 .612 .629 .638 .655 .663 .638 .666 .638
HIGH RPM SOLIDS These designs are to be used primarily on motors with 1.7 or greater rocker ratios. Design rates have been carefully chosen to allow these designs to run higher engine speeds than their high torque counterparts. LOBE NUMBER
RATED DURATION
6019 6012 6013 6006 6027 6028 6029
284-1 294-1 304-1 314-1 324-1 328-3 334-2
CAMSHAFT TYPE High RPM Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
DURATION IN DEGREES @ .050 246 256 266 276 286 290 296
@ .200 152 162 172 182 191 184 200
LOBE LIFT .326 .341 .356 .371 .386 .400 .400
TAPPET LIFT @ TDC 106° .097 .114 .131 .148 .165 .168 .182
110° .083 .100 .117 .134 .151 .154 .168
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .489 .512 .534 .557 .579 .600 .600
1.6 .522 .546 .570 .594 .618 .640 .640
1.7 .554 .580 .605 .631 .656 .680 .680
HI-TECH™ SOLIDS These designs represent an excellent mix of horsepower, torque, rpm and durability. They work with .842" or larger diameter tappet, producing very good results. These have been used successfully in everything from Sprint Cup and endurance applications to drag racing and hobby stocks. LOBE NUMBER
RATED DURATION
6030 6031 6032 6033 6034 6035 6036
300-4 304-4 308-4 312-4 316-4 320-4 324-4
CAMSHAFT TYPE Hi-Tech™ Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
440
DURATION IN DEGREES @ .050 262 266 270 274 278 282 286
WWW.CAMHELP.COM
@ .200 166 170 174 177 181 186 192
LOBE LIFT .365 .370 .375 .380 .385 .390 .400
TAPPET LIFT @ TDC 106° .121 .128 .134 .140 .147 .154 .163
110° .108 .114 .120 .127 .133 .140 .149
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .548 .555 .563 .570 .578 .585 .600
1.6 .584 .592 .600 .608 .616 .624 .640
1.7 .621 .629 .638 .646 .655 .663 .680
SOLID FLAT TAPPET
The designs for the Tight Lash Solid .842" diameter lifters feature shorter seat timing and more area than similar designs. Good in restricted or open rules circle track racing. The larger designs perform very well in drag racing. LOBE RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE LIFT NUMBER DURATION DEGREES LIFT @ TDC @ “0” LASH ROCKER ARM RATIO CAMSHAFT TYPE
Tight Lash Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
6312 6313 6314 6301 6302 6303 6304 6305 6306 6307 6308 6310
TL264 TL268 TL272 TL276 TL280 TL284 TL288 TL292 TL296 TL300 TL304 TL312
@ .050 234 238 242 246 250 254 259 262 266 270 274 282
@ .200 143 147 151 154 158 162 166 169 173 177 181 191
.3300 .3350 .3400 .3476 .3534 .3600 .3667 .3734 .3800 .3867 .3934 .4067
106° .083 .089 .096 .102 .109 .114 .121 .127 .133 .139 .143 .162
110° .070 .077 .083 .089 .095 .101 .108 .113 .119 .125 .130 .148
1.5 .495 .503 .510 .521 .530 .540 .550 .560 .570 .580 .590 .610
1.6 .528 .536 .544 .556 .565 .576 .587 .597 .608 .619 .629 .651
1.7 .561 .570 .578 .591 .601 .612 .623 .635 .646 .657 .669 .691
SOLID FLAT TAPPET
TIGHT LASH SOLIDS
HIGH RPM SERIES II SOLIDS High RPM Series II Solids are more aggressive than the original High RPM and Hi-Tech™ Solid Profiles. They are designed for use in applications that need the area of an XTQ style lobe, but are required to operate at higher engine speeds than that fast of a ramp will allow. Note: Cams using these lobes should have provisions for increased oiling. Please consult with our tech representative. LOBE NUMBER
RATED DURATION
6330 6331 6332 6333 6334 6335 6336
287 291 295 299 303 307 311
CAMSHAFT TYPE High RPM II Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
DURATION IN DEGREES @ .050 256 260 264 268 272 276 280
@ .200 167 171 175 179 183 187 191
LOBE LIFT .367 .371 .376 .380 .384 .389 .393
TAPPET LIFT @ TDC 106° .121 .128 .135 .142 .149 .156 .163
110° .107 .114 .121 .128 .135 .142 .149
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .551 .557 .564 .570 .576 .584 .590
1.6 .587 .594 .602 .608 .614 .622 .629
1.7 .624 .631 .639 .646 .653 .661 .668
XTX SOLIDS The XTX Solids are an excellent choice for exhaust profiles to be coupled with either the XTQ or MH profiles or can be used for both intake and exhaust in high rpm applications. The closing side is similar to the High Torque profiles, but this design incorporates a faster opening side to increase torque and provide more area. The lifts are slightly less than the High Torque profiles to increase the nose radius and reduce wear. Note: Cams using these lobes should have provisions for increased oiling. Please consult with our tech representative. LOBE NUMBER
RATED DURATION
6400 6402 6404 6406 6408 6410 6412 6414 6416 6418 6420
272 276 280 284 288 292 296 300 304 308 312
CAMSHAFT TYPE
XTX Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
DURATION IN DEGREES @ .050 238 242 246 250 254 258 262 266 270 274 278
@ .200 145 149 153 157 161 165 169 173 177 181 185
LOBE LIFT .335 .341 .347 .351 .355 .359 .363 .367 .371 .375 .379
TAPPET LIFT @ TDC 106° .086 .092 .099 .105 .112 .118 .125 .132 .139 .146 .153
110° .074 .080 .086 .092 .098 .105 .111 .118 .125 .132 .139
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .503 .512 .521 .527 .533 .539 .545 .551 .557 .563 .569
1.6 .536 .546 .555 .562 .568 .574 .581 .587 .594 .600 .606
1.800.999.0853
1.7 .570 .580 .590 .597 .604 .610 .617 .624 .631 .638 .644
441
SOLID FLAT TAPPET
SOLID FLAT TAPPET XTQ SOLIDS The XTQ Solid design sets the new standard for aggressive .842" lifter designs. With seat timing as low as our original Tight Lash series and more area than our famous “XX” .875" series, these designs give their racers a clear edge over the competition. Smaller designs are intended for restricted applications; larger designs can be used in open applications with an optimized valve spring selection and lighter valve train. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
6275 6276 6277 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270
248XTQ 254XTQ 260XTQ 266XTQ 270XTQ 274XTQ 278XTQ 282XTQ 286XTQ 290XTQ 294XTQ 298XTQ 302XTQ 306XTQ 310XTQ 314XTQ
CAMSHAFT TYPE
XTQ Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
DURATION IN DEGREES @ .050 218 224 230 236 240 244 248 252 256 260 264 268 272 276 280 284
@ .200 129 135 141 147 152 156 160 164 168 172 176 180 184 188 192 196
LOBE LIFT .310 .318 .325 .334 .340 .346 .354 .360 .366 .372 .378 .386 .392 .398 .404 .410
TAPPET LIFT @ TDC 106° .057 .067 .077 .087 .094 .101 .108 .115 .122 .129 .136 .143 .150 .157 .164 .171
110° .046 .054 .064 .073 .080 .087 .094 .101 .108 .115 .122 .129 .136 .143 .150 .157
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .465 .477 .488 .501 .510 .519 .531 .540 .549 .558 .567 .579 .588 .597 .606 .615
1.6 .496 .509 .520 .534 .544 .554 .566 .576 .586 .595 .605 .618 .627 .637 .646 .656
1.7 .527 .541 .553 .568 .578 .588 .602 .612 .622 .632 .643 .656 .666 .677 .687 .697
MAX AREA (MA) SOLIDS The Max Area Series is designed for 2 BBL and stock intake applications in which airflow is limited. This series of lobes utilizes low seat timing with maximum area under the curve. These lobes perform best with a 1.7 or 1.8 rocker ratio and can be used with an .842" lifter. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6222
MA251-1 MA255-1 MA259-1 MA263-1 MA267-1 MA271-1 MA275-1 MA279-1 MA283-1 MA287-1 MA291-1 MA295-1 MA299-1
CAMSHAFT TYPE
Max Area Rated Duration @ .020" Tappet Lift .842" Min. Dia.
442
DURATION IN DEGREES @ .050 225 229 232 236 240 244 248 252 256 260 264 268 272
@ .200 135 139 143 147 151 155 159 161 164 168 171 176 179
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LOBE LIFT .319 .326 .330 .331 .333 .340 .340 .340 .340 .340 .340 .345 .345
TAPPET LIFT @ TDC 106° .064 .072 .076 .090 .097 .104 .109 .116 .123 .129 .136 .143 .149
110° .053 .059 .064 .077 .083 .091 .096 .103 .109 .116 .123 .129 .136
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .479 .489 .495 .497 .500 .510 .510 .510 .510 .510 .510 .518 .518
1.6 .510 .522 .528 .530 .533 .544 .544 .544 .544 .544 .544 .552 .552
1.7 .542 .554 .561 .563 .566 .578 .578 .578 .578 .578 .578 .587 .587
SOLID FLAT TAPPET
The Max Area Lift Rule lobes can be run with solid lifters or Ultra Pro Magnum™ style hydraulic lifters. They are more aggressive off the seat than the parent Max Area Series for tighter lash and less rocker. They work well in lift rule oval track, road race and high rpm NHRA Stock Eliminator classes. Will check 21° larger at .006" than .020". Specifically designed to optimize dynamic valve motion and produce maximum power, these lobes use the experience gained from racing the MA profile and the new techniques learned from Spintron® testing to provide the best performance in all lift rule applications. Grouped in lobe lift increments for convenient selection. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE LIFT NUMBER DURATION DEGREES LIFT @ TDC @ “0” LASH ROCKER ARM RATIO CAMSHAFT TYPE
Max Area Low Lift Rated Duration @ .020" Tappet Lift .842" Min. Dia. .010"-.020" Lash
5695 5696 5704 5718 5720 5719 5708 5645 5744 5746 5550 5553 5643 5644 5649 5646 5650 5651 5652 5653 5647 5654 5655 5657 5692 5694 5697 5698 5667 5668 5669 5670 5656 5658 5659 5666 5663 5664 5665 5661 5662 5678 5680 5679 5676 5677 5681
273 277 283 275 279 283 293 257 261 265 267 274 281 265 273 275 277 281 285 289 291 293 297 301 283 291 303 297 257 265 269 273 276 283 286 290 295 301 303 287 291 279 286 294 263 267 271
@ .050 246 250 256 248 252 256 266 230 234 238 240 248 254 238 246 248 250 254 258 262 264 266 270 274 256 264 276 270 230 238 242 246 250 256 260 264 268 274 276 260 264 252 259 267 236 240 244
@ .200 124 127 142 140 144 148 159 124 129 133 134 142 148 134 143 145 146 150 154 159 161 163 167 170 156 165 176 171 135 142 145 148 152 156 161 165 171 172 174 166 169 152 158 167 143 147 151
.237 .237 .242 .252 .252 .252 .255 .260 .260 .260 .260 .260 .260 .266 .266 .266 .266 .266 .266 .266 .266 .266 .266 .266 .273 .273 .275 .278 .283 .283 .283 .283 .283 .283 .283 .283 .283 .283 .283 .288 .288 .290 .294 .296 .300 .300 .300
106° .100 .106 .117 .103 .109 .115 .131 .076 .083 .089 .093 .107 .115 .089 .103 .106 .109 .115 .122 .129 .132 .135 .141 .147 .121 .134 .152 .144 .078 .091 .098 .104 .110 .121 .127 .136 .144 .149 .151 .130 .136 .113 .121 .134 .088 .095 .102
110° .088 .094 .105 .090 .096 .103 .119 .063 .070 .076 .080 .093 .102 .076 .090 .093 .096 .102 .110 .116 .120 .123 .129 .135 .108 .121 .140 .131 .064 .077 .084 .090 .097 .107 .113 .123 .131 .136 .139 .116 .122 .100 .108 .121 .074 .081 .088
1.5 .356 .356 .363 .378 .378 .378 .383 .390 .390 .390 .390 .390 .390 .399 .399 .399 .399 .399 .399 .399 .399 .399 .399 .399 .410 .410 .413 .417 .425 .425 .425 .425 .425 .425 .425 .425 .425 .425 .425 .432 .432 .435 .441 .444 .450 .450 .450
1.6 .379 .379 .387 .403 .403 .403 .408 .416 .416 .416 .416 .416 .416 .426 .426 .426 .426 .426 .426 .426 .426 .426 .426 .426 .437 .437 .440 .445 .453 .453 .453 .453 .453 .453 .453 .453 .453 .453 .453 .461 .461 .464 .470 .474 .480 .480 .480
1.800.999.0853
1.7 .403 .403 .411 .428 .428 .428 .434 .442 .442 .442 .442 .442 .442 .452 .452 .452 .452 .452 .452 .452 .452 .452 .452 .452 .464 .464 .468 .473 .481 .481 .481 .481 .481 .481 .481 .481 .481 .481 .481 .490 .490 .493 .500 .503 .510 .510 .510
SOLID FLAT TAPPET
MAX AREA LIFT RULE SOLIDS
443
SOLID FLAT TAPPET
SOLID FLAT TAPPET MAX AREA LIFT RULE SOLIDS cont. LOBE RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE LIFT NUMBER DURATION DEGREES LIFT @ TDC @ “0” LASH ROCKER ARM RATIO CAMSHAFT TYPE
Max Area Low Lift Rated Duration @ .020" Tappet Lift .842" Min. Dia. .010"-.020" Lash
5682 5683 5684 5685 5686 6174 5713 5714 5715 6192 6193 6194 6195 6196 6197 6198 6199 6200 6231 6232 6234 6235 6237 6238 6239 6246 6240 6249 6241 6242 6243 6244 6245 6247
275 279 283 287 291 274 280 282 284 266 270 274 278 282 286 290 294 298 262 266 274 278 286 290 294 296 300 304 262 266 270 274 278 282
@ .050 248 252 256 260 264 248 254 256 258 240 244 248 252 256 260 264 268 272 236 240 248 252 260 264 268 270 274 278 236 240 244 248 252 256
@ .200 155 158 162 166 170 158 158 160 162 150 154 158 162 166 170 174 178 182 148 152 160 164 172 176 180 182 186 190 149 152 156 160 164 167
.300 .300 .300 .300 .300 .304 .306 .306 .306 .312 .312 .312 .312 .312 .312 .312 .312 .312 .322 .322 .322 .322 .322 .322 .324 .320 .324 .324 .330 .330 .330 .330 .330 .330
106° .109 .116 .123 .130 .136 .109 .116 .119 .123 .095 .102 .109 .116 .123 .130 .137 .144 .151 .088 .095 .109 .116 .131 .138 .145 .148 .155 .162 .088 .095 .102 .109 .116 .124
110° .095 .102 .109 .116 .123 .095 .103 .106 .109 .081 .088 .095 .102 .109 .116 .123 .130 .137 .075 .081 .095 .102 .116 .124 .131 .134 .141 .148 .075 .081 .088 .095 .102 .109
1.5 .450 .450 .450 .450 .450 .456 .459 .459 .459 .468 .468 .468 .468 .468 .468 .468 .468 .468 .483 .483 .483 .483 .483 .483 .486 .480 .486 .486 .495 .495 .495 .495 .495 .495
1.6 .480 .480 .480 .480 .480 .486 .490 .490 .490 .499 .499 .499 .499 .499 .499 .499 .499 .499 .515 .515 .515 .515 .515 .515 .518 .512 .518 .518 .528 .528 .528 .528 .528 .528
1.7 .510 .510 .510 .510 .510 .517 .520 .520 .520 .530 .530 .530 .530 .530 .530 .530 .530 .530 .547 .547 .547 .547 .547 .547 .551 .544 .551 .551 .561 .561 .561 .561 .561 .561
JF .330" LIFT SOLIDS The JF .330" Lift Solids are designed for use in lift rule classes that require higher rpm or lighter springs than needed with the Max Area Lift Rule series. The JF designs are also good for use with very high rockers in more open applications. Can also be run in hydraulic lifter applications. LOBE NUMBER
RATED DURATION
6160 6161 6162 6163 6164 6165 6166 6167 6168 6169
273 277 281 285 289 293 295 297 299 301
CAMSHAFT TYPE
JF .330" Lift Rated Duration @ .020" Tappet Lift .842" Min. Dia.
444
DURATION IN DEGREES @ .050 244 248 252 256 260 264 266 268 270 272
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@ .200 153 157 161 164 167 170 172 174 176 178
LOBE LIFT .330 .330 .330 .330 .330 .330 .330 .330 .330 .330
TAPPET LIFT @ TDC 106° .100 .107 .114 .121 .126 .132 .136 .139 .143 .146
110° .087 .094 .100 .107 .113 .119 .122 .126 .129 .133
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .495 .495 .495 .495 .495 .495 .495 .495 .495 .495
1.6 .528 .528 .528 .528 .528 .528 .528 .528 .528 .528
1.7 .561 .561 .561 .561 .561 .561 .561 .561 .561 .561
SOLID FLAT TAPPET
MH solids are the most aggressive .842" solid lifter profiles available. These are best in restricted applications where maximum torque and power are required and valve train rules are open except for requiring .842" flat tappets. COMP Cams® #26094 valve spring, 3/8" min. pushrod diameter, Hi-Tech™ Lifters and shaft mounted rockers are all highly recommended. Please consult with a CAM HELP® technician or one of our engine builder sales personnel before using these profiles to reduce the risk from improper component selection. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE 6252 6286 6253 6289 6282 6251 6281 6250 6280 6254 6283 6284 6255 6285 6256
MH Rated Duration @ .020" Tappet Lift .842" Min. Dia. .018" Lash
262 264 266 268 270 272 274 276 278 280 282 284 286 288 290
DURATION IN DEGREES @ .050 236 238 240 242 244 246 248 250 252 254 256 258 260 262 264
@ .200 149 151 153 155 157 159 161 163 165 167 169 171 173 175 177
LOBE LIFT .345 .348 .350 .354 .357 .360 .362 .365 .367 .368 .370 .372 .375 .377 .380
TAPPET LIFT @ TDC 106° .088 .092 .095 .099 .102 .106 .109 .113 .116 .120 .124 .127 .131 .134 .138
110° .075 .078 .081 .085 .088 .092 .095 .099 .102 .106 .109 .113 .116 .120 .124
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .518 .522 .525 .531 .536 .540 .543 .548 .551 .552 .555 .558 .563 .566 .570
1.6 .552 .557 .560 .566 .571 .576 .579 .584 .587 .589 .592 .595 .600 .603 .608
1.7 .587 .592 .595 .602 .607 .612 .615 .621 .624 .626 .629 .632 .638 .641 .646
SOLID FLAT TAPPET
MH SOLIDS
GRI SERIES SOLIDS The GRI series .842" solid lifter profiles were designed using the latest techniques to fill in the gap between the XTQ and MH families while providing better dynamics than with either other design. These should be used only on nitrided camshafts. Also, the mating lifters should be inspected and sorted by the chamfer with only small chamfer lifters used on these designs. Please consult with a CAM HELP® technician or one of our engine builder sales personnel before using these profiles to reduce the risk from improper component selection. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
16200 16202 16204 16206 16208 16210 16212 16214 16216 16218 16220 16222
265 269 273 277 281 285 289 293 297 301 305 309
CAMSHAFT TYPE
GRI Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 238 242 246 250 254 258 262 266 270 274 278 282
@ .200 150 154 158 162 166 170 174 178 182 186 190 194
LOBE LIFT 0.346 0.353 0.360 0.367 0.373 0.379 0.385 0.391 0.397 0.403 0.409 0.415
TAPPET LIFT @ TDC 106° .091 .098 .105 .112 .119 .126 .133 .140 .147 .154 .161 .168
110° .078 .084 .091 .098 .105 .112 .119 .126 .133 .140 .147 .154
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .519 .530 .540 .551 .560 .569 .578 .587 .596 .605 .614 .623
1.6 .554 .565 .576 .587 .597 .606 .616 .626 .635 .645 .654 .664
1.800.999.0853
1.7 .588 .600 .612 .624 .634 .644 .655 .665 .675 .685 .695 .706
445
SOLID FLAT TAPPET
SOLID FLAT TAPPET MHF SOLIDS MHF solids are similar to the MH series but have even more velocity and more area to take complete advantage of the larger .875" Ford lifter. Please consult with a CAM HELP® technician or one of our engine builder sales personnel before using these profiles to reduce the risk from improper component selection. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
7393 7394 7395 7404 7405 7406 7408 7409 7411 7412 7413 7414 7415 7416
260 262 264 266 268 270 274 278 282 286 290 294 296 298
CAMSHAFT TYPE
MHF Rated Duration @ .020" Tappet Lift .875" Min. Dia. .018" Lash
DURATION IN DEGREES @ .050 234 236 238 240 242 244 248 252 256 260 264 268 270 272
@ .200 150 152 154 156 158 160 164 168 172 176 180 184 186 188
LOBE LIFT .355 .357 .359 .361 .362 .364 .369 .373 .380 .385 .390 .395 .397 .400
TAPPET LIFT @ TDC 106° .085 .089 .093 .096 .100 .104 .111 .118 .126 .133 .141 .148 .152 .156
110° .071 .075 .078 .082 .085 .089 .096 .104 .111 .118 .126 .133 .137 .141
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .533 .536 .539 .542 .543 .546 .554 .560 .570 .578 .585 .593 .596 .600
1.6 .568 .571 .574 .578 .579 .582 .590 .597 .608 .616 .624 .632 .635 .640
1.7 .604 .607 .610 .614 .615 .619 .627 .634 .646 .655 .663 .672 .675 .680
FL & SQ SOLIDS The FL series is designed to provide excellent area under the curve with an .875" tappet. These work well in place of TLs where .875" lifters can be used. Excellent in restricted applications with 1.65:1 to 1.75:1 rocker arms. Increased valve spring loads are recommended for higher rpm. The SQ designs are the larger cousins of the FL series and can be used in higher rpm applications with increased spring loads. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
FL .875" Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7130 7131 7132 7133 7134
FL268 FL272 FL276 FL280 FL284
@ .050 239 243 247 251 254
@ .200 153 157 161 165 169
.356 .361 .366 .371 .381
106° .091 .098 .106 .113 .120
110° .078 .084 .091 .098 .106
1.5 .534 .542 .549 .557 .572
1.6 .570 .578 .586 .594 .610
1.7 .605 .614 .622 .631 .648
SQ .875" Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7250 7262 7260 7263 7261 7265 7266 7267
289 291 293 295 297 300 302 304
260 262 264 266 268 270 272 274
175 177 179 181 183 185 187 189
.385 .385 .390 .390 .400 .400 .400 .400
.132 .135 .138 .142 .146 .150 .154 .158
.117 .120 .123 .127 .131 .135 .139 .143
.578 .578 .585 .585 .600 .600 .600 .600
.616 .616 .624 .624 .640 .640 .640 .640
.655 .655 .663 .663 .680 .680 .680 .680
CAMSHAFT TYPE
446
DURATION IN DEGREES
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LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
SOLID FLAT TAPPET
Designed to turn high engine speeds while maintaining control of the valve. Must use .875" diameter lifter. For use with 1.65-1.7+ rocker arms. Easy on valve train components. Intake designs have faster opening ramps and can be used on intake or exhaust. Exhaust designs have symmetrical ramps and are smoother. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
High RPM Dash 12 Int. Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7160 7161 7162 7163 7164 7165 7166 7168 7158 7159
292-12 296-12 300-12 302-12 304-12 306-12 308-12 312-12 314-12 318-12
@ .050 258 262 266 268 270 272 274 278 280 284
@ .200 168 171 176 179 180 182 183 188 190 194
.375 .380 .390 .395 .395 .400 .400 .408 .410 .410
106° .120 .128 .130 .134 .138 .142 .145 .153 .156 .164
110° .106 .113 .116 .119 .123 .127 .130 .138 .142 .149
1.5 .563 .570 .585 .593 .593 .600 .600 .612 .615 .615
1.6 .600 .608 .624 .632 .632 .640 .640 .653 .656 .656
1.7 .638 .646 .663 .672 .672 .680 .680 .694 .697 .697
High RPM Dash 12 Exh. Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7169 7170 7174 7171 7172
312-11 316-12 318-11 320-12 322-12
276 280 282 284 286
184 188 190 192 194
.400 .408 .410 .410 .410
.148 .155 .159 .163 .167
.134 .141 .145 .148 .152
.600 .612 .615 .615 .615
.640 .653 .656 .656 .656
.680 .694 .697 .697 .697
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
SOLID FLAT TAPPET
HIGH RPM DASH 12 SOLIDS
DASH 13 SOLIDS Dash 13 Solids are very similar to both the Dash 12 and XX open designs. These provide a more modern, in-between series that can handle more rocker ratio than either of the two earlier families. Note: Cams using these lobes should have provisions for increased oiling. LOBE NUMBER
RATED DURATION
7185 9185 7186 9186 7187 9187 7188 9188 7189 9189 7190 9190 7191 9191 7192 9192 7193 9193 7194 9194 7015 9195 7016
310-13 310 312-13 312 314-13 314 316-13 316 318-13 318 320-13 320 322-13 322 324-13 324 326-13 326 328-13 328 330-13 330 332-13
CAMSHAFT TYPE
Dash 13 Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 276 276 278 278 280 280 282 282 284 284 286 286 288 288 290 290 292 292 294 294 296 296 298
@ .200 186 186 188 188 190 190 192 192 194 194 196 196 198 198 200 200 202 202 204 204 206 206 208
LOBE LIFT .392 .402 .394 .404 .396 .406 .398 .408 .400 .410 .402 .412 .403 .414 .404 .416 .405 .418 .406 .420 .407 .422 .408
TAPPET LIFT @ TDC 106° .151 .151 .155 .155 .159 .159 .163 .163 .166 .166 .170 .170 .174 .174 .178 .178 .182 .182 .186 .186 .189 .189 .193
110° .136 .136 .140 .140 .144 .144 .148 .148 .151 .151 .155 .155 .159 .159 .163 .163 .167 .167 .171 .171 .174 .174 .178
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .627 .643 .630 .646 .634 .650 .637 .653 .640 .656 .643 .659 .645 .662 .646 .666 .648 .669 .650 .672 .651 .675 .653
1.6 .666 .683 .670 .687 .673 .690 .677 .694 .680 .697 .683 .700 .685 .704 .687 .707 .689 .711 .690 .714 .692 .717 .694
1.800.999.0853
1.7 .706 .724 .709 .727 .713 .731 .716 .734 .720 .738 .724 .742 .725 .745 .727 .749 .729 .752 .731 .756 .733 .760 .734
447
SOLID FLAT TAPPET
SOLID FLAT TAPPET F3 EXHAUST SOLIDS The F3 Exhaust Solids are like the Dash 13 high lift lobes, but they have a faster opening ramp ramp design to help increase torque while increasing opening area to reduce pumping losses. Note: Cams using these lobes should have provisions for increased oiling. LOBE NUMBER
RATED DURATION
9158 9159 9160 9161 9162
314 316 318 320 322
CAMSHAFT TYPE F3 EXHAUST Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 283 285 287 289 291
@ .200 194 196 198 200 202
LOBE LIFT .410 .412 .414 .416 .418
TAPPET LIFT @ TDC 106° .166 .170 .174 .178 .182
110° .151 .155 .159 .163 .167
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .656 .659 .662 .666 .669
1.6 .697 .700 .704 .707 .711
1.7 .738 .742 .745 .749 .752
D3C SOLIDS D3C Solids are like the Dash 13 designs but with slightly less velocity for coated tappets. LOBE NUMBER
RATED DURATION
9384 9385 9386 9387 9388 9389
312 314 316 318 320 322
CAMSHAFT TYPE D3C Series Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 278 280 282 284 286 288
@ .200 187 189 191 193 195 197
LOBE LIFT .390 .392 .394 .396 .398 .400
TAPPET LIFT @ TDC 106° .154 .158 .162 .166 .169 .173
110° .140 .144 .147 .151 .155 .158
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .624 .627 .630 .634 .637 .640
1.6 .663 .666 .670 .673 .677 .680
1.7 .702 .706 .709 .713 .716 .720
XX SERIES SOLIDS The smaller Restricted designs are very aggressive. The larger Open designs are for continuous high rpm, providing stability over 8500 with good related components. Both require proper spring selection and regular maintenance. Very good horsepower curves. Proper break-in is very critical with these lobe designs. Best when used with COMP® HTL Lifters and 1.6-1.7 rocker ratios. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
XX Series Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7110 7113 7114 7115 7136 7116 7118 7117
278XX 280XX 282XX 284XX 286XX 288XX 294XX 298XX
@ .050 246 248 250 254 256 258 262 266
@ .200 159 160 162 166 168 170 175 180
.365 .365 .370 .366 .378 .380 .390 .400
106° .102 .103 .106 .114 .118 .120 .129 .137
110° .088 .090 .092 .100 .104 .107 .115 .122
1.5 .548 .548 .555 .549 .567 .570 .585 .600
1.6 .584 .584 .592 .586 .605 .608 .624 .640
1.7 .621 .621 .629 .622 .643 .646 .663 .680
Open Designs Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7068 7069 7071 7072 7073 7074 7075 7125 7077 7078 7127 7135
292XX 296XX 300XX 302XX 304XX 306XX 308XX 310XX 312XX 314XX 316XX 320XX
260 264 268 270 272 274 276 278 280 282 284 288
170 174 178 180 182 184 186 190 191 193 196 200
.390 .395 .400 .403 .406 .408 .410 .415 .415 .418 .420 .420
.124 .133 .139 .141 .145 .148 .153 .158 .161 .165 .169 .177
.110 .119 .122 .124 .126 .131 .133 .139 .143 .150 .146 .154
.585 .593 .600 .605 .609 .612 .615 .623 .623 .627 .630 .630
.624 .632 .640 .645 .650 .653 .656 .664 .664 .669 .672 .672
.663 .672 .680 .685 .690 .694 .697 .706 .706 .711 .714 .714
CAMSHAFT TYPE
448
DURATION IN DEGREES
WWW.CAMHELP.COM
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
SOLID FLAT TAPPET
Specially designed for NASCAR Sprint Cup restrictor plate engines. Use with 2.0:1 intake rocker and 1.9:1 exhaust along with a #927 valve spring. Very smooth for 2.0:1 design and very easy on other valve train parts. Note: Cams using these lobes should have provisions for increased oiling. Please consult with a tech representative. LOBE NUMBER
RATED DURATION
7380 7381 7382 7388 7383 7386 7384 7387 7385 7389 7396 7399
261 265 270 272 274 276 278 280 282 286 292 298
CAMSHAFT TYPE
High Ratio Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 230 234 238 240 242 244 246 248 250 254 260 266
@ .200 141 144 146 149 152 153 154 157 158 163 169 175
LOBE LIFT .325 .325 .325 .335 .335 .335 .335 .340 .340 .350 .355 .360
TAPPET LIFT @ TDC 106° .075 .081 .087 .090 .094 .097 .100 .104 .107 .114 .125 .136
110° .063 .069 .075 .078 .081 .084 .087 .090 .094 .100 .111 .121
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .618 .618 .618 .637 .637 .637 .637 .646 .646 .665 .675 .684
1.6 .650 .650 .650 .670 .670 .670 .670 .680 .680 .700 .710 .720
1.7 .683 .683 .683 .704 .704 .704 .704 .714 .714 .735 .746 .756
SOLID FLAT TAPPET
HIGH ROCKER RATIO SOLIDS
HIGH ROCKER RATIO SERIES II SOLIDS Specially designed for NASCAR Sprint Cup restrictor plate engines. Use with 2.0:1 intake rocker and 1.9:1 exhaust along with #927 valve spring. More aggressive than earlier 2.0:1 design but still very easy on valve train parts. LOBE NUMBER
RATED DURATION
7353 7354 7355 7356 7357 7358 7359 7362 7363 7364 7365 7366 7367 7368
266 268 270 272 274 276 278 280 282 284 286 288 290 292
CAMSHAFT TYPE
High Ratio Series II Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 236 238 240 242 244 246 248 250 252 254 256 258 260 262
@ .200 148 150 152 154 157 158 160 162 164 166 167 169 170 172
LOBE LIFT .332 .335 .338 .342 .345 .345 .345 .345 .345 .345 .345 .345 .345 .345
TAPPET LIFT @ TDC 106° .087 .090 .093 .097 .101 .104 .108 .111 .115 .119 .122 .126 .129 .133
110° .063 .076 .080 .083 .087 .090 .093 .097 .100 .104 .108 .111 .115 .118
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .631 .637 .642 .650 .656 .656 .656 .656 .656 .656 .656 .656 .656 .656
1.6 .664 .670 .676 .684 .690 .690 .690 .690 .690 .690 .690 .690 .690 .690
1.7 .697 .704 .710 .718 .725 .725 .725 .725 .725 .725 .725 .725 .725 .725
TDLC SOLIDS The TDLC Solids are a cross between the Oval+ and FE designs but with lower velocity for use with coated tappets. LOBE NUMBER
RATED DURATION
9374 9375 9376 9377
297 299 301 303
CAMSHAFT TYPE TDLC Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 266 268 270 272
@ .200 176 178 180 182
LOBE LIFT .384 .386 .388 .390
TAPPET LIFT @ TDC 106° .134 .138 .142 .145
110° .120 .124 .127 .131
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.9 .730 .733 .737 .741
2.0 .768 .772 .776 .780
1.800.999.0853
2.1 .806 .811 .815 .819
449
SOLID FLAT TAPPET
SOLID FLAT TAPPET N SERIES SOLIDS Our most popular NASCAR Sprint Cup designs, these provide excellent power and reliability. Very stable at high rpm (8600+) with #927 springs proper valve train selection. Excellent high end power with slightly less low end torque than XX series. Needs .875" HTL tappet and true lifter bores with very careful break-in. LOBE NUMBER
RATED DURATION
N Series Int. Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7020 7021 7022 7028 7023 7084 7085 7086 7087
294N-1 298N-2 300N-1 302N-1 304N-1 306N-1 308N-1 310N-1 312N-1
@ .050 262 266 268 270 272 274 276 278 280
@ .200 174 176 173 181 183 186 187 189 191
.401 .410 .406 .410 .412 .411 .411 .411 .411
106° .129 .134 .132 .143 .147 .151 .155 .158 .161
110° .115 .120 .121 .128 .132 .136 .141 .143 .147
1.5 .602 .615 .609 .615 .618 .617 .617 .617 .617
1.6 .642 .656 .650 .656 .659 .658 .658 .658 .658
1.7 .682 .697 .690 .697 .700 .699 .699 .699 .699
N Series Exh. Rated Duration @ .020" Tappet Lift .875" Min. Dia.
7120 7121 7122 7123 7124
304N-3E 308N-1E 310N-1E 314N-1E 318N-1E
266 270 271 276 280
174 179 178 183 186
.390 .400 .390 .400 .405
.128 .133 .137 .145 .149
.114 .119 .123 .131 .135
.585 .600 .585 .600 .608
.624 .640 .624 .640 .648
.663 .680 .663 .680 .689
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
OVAL+ SOLIDS These profiles have their design based on the ever popular N1 series but have been optimized for the higher rocker ratios, tighter lash settings and lower compression used in today's Sprint Cup engines. For use with 1.7 to 1.8:1 rockers (or more in qualifying). Requires the same care as the N1 for break-in. LOBE NUMBER
RATED DURATION
7037 7038 7039 7040 7041 7042 7043 7044 7049
299 301 303 305 307 309 311 313 315
CAMSHAFT TYPE
Oval+ Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 266 268 270 272 274 276 278 280 282
@ .200 177 179 181 183 185 187 189 191 193
LOBE LIFT .399 .401 .403 .405 .407 .409 .411 .413 .415
TAPPET LIFT @ TDC 106° .136 .140 .143 .147 .151 .154 .158 .162 .165
110° .122 .125 .128 .132 .136 .140 .143 .147 .151
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .678 .682 .685 .689 .692 .695 .699 .702 .706
1.75 .698 .702 .705 .709 .712 .716 .719 .723 .726
1.8 .718 .722 .725 .729 .733 .736 .740 .743 .747
FE .875 SOLIDS These designs are for use in NASCAR Sprint Cup with high rocker ratios. Typically used with 1.75 to 1.80:1 ratios for race and 1.9 to 2.0:1 ratios for qualifying. These are very comparable to the Oval+ Solids but should be a little better below peak torque and above peak power if the valve train is optimized. LOBE NUMBER
RATED DURATION
7665 7666 7667 7668 7669 7670 7671
299 301 303 305 307 309 311
CAMSHAFT TYPE FE .875 Rated Duration @ .020" Tappet Lift .875" Min. Dia.
450
DURATION IN DEGREES @ .050 267 269 271 273 275 277 279
@ .200 178 180 182 184 186 188 190
WWW.COMPCAMS.COM
LOBE LIFT .398 .400 .402 .405 .408 .411 .413
TAPPET LIFT @ TDC 106° .138 .141 .145 .149 .153 .156 .159
110° .123 .127 .130 .134 .137 .141 .145
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .677 .680 .683 .689 .694 .699 .702
1.75 .697 .700 .704 .709 .714 .719 .723
1.8 .716 .720 .724 .729 .734 .740 .743
SOLID FLAT TAPPET
The T1N series is the next step in the evolution of the N1, Oval+ and FE series. These are optimized for use on Tool Steel cams and work very well with the popular DLC tappet coatings. T1N profiles have been used very successfully on both the intake and exhaust side. LOBE NUMBER
RATED DURATION
9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370
303 305 307 309 311 313 315 317 319 321 323
CAMSHAFT TYPE
T1N Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 270 272 274 276 278 280 282 284 286 288 290
@ .200 181 183 185 187 189 191 193 195 197 199 201
LOBE LIFT .394 .396 .398 .400 .402 .404 .406 .408 .410 .412 .414
TAPPET LIFT @ TDC 106° .142 .146 .150 .153 .157 .161 .164 .168 .172 .176 .179
110° .128 .131 .135 .139 .142 .146 .150 .153 .157 .161 .164
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 .709 .713 .716 .720 .724 .727 .731 .734 .738 .742 .745
1.9 .749 .752 .756 .760 .764 .768 .771 .775 .779 .783 .787
2.0 .788 .792 .796 .800 .804 .808 .812 .816 .820 .824 .828
SOLID FLAT TAPPET
T1N SERIES − VERY HIGH RPM .875" FLAT TAPPET
NRX SOLIDS The NRX Solids are designed for use in NASCAR Sprint Cup engines with 55mm or larger journals. They are designed with higher lobe lifts than the standard journal families to allow either less ratio or higher lift. Use in applications with less that 55mm journals will result in a small nose radius and premature wear. LOBE NUMBER
RATED DURATION
7203 7204 7205 7206 7207 7208 9709 9710 9711 9712 9713 9714
299 301 303 305 307 309 311 313 315 317 319 321
CAMSHAFT TYPE
NRX Rated Duration @ .020" Tappet Lift .875" Min. Dia.
DURATION IN DEGREES @ .050 266 268 270 272 274 276 278 280 282 284 286 288
@ .200 179 181 183 185 187 189 191 193 195 197 199 201
LOBE LIFT .414 .416 .418 .420 .422 .424 .426 .428 .430 .432 .434 .436
TAPPET LIFT @ TDC 106° .139 .143 .147 .151 .155 .158 .162 .166 .170 .174 .177 .181
110° .124 .128 .132 .136 .139 .143 .147 .151 .155 .158 .162 .166
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .704 .707 .711 .714 .717 .721 .724 .728 .731 .734 .738 .741
1.75 .725 .728 .732 .735 .739 .742 .746 .749 .753 .756 .760 .763
1.8 .745 .749 .752 .756 .760 .763 .767 .770 .774 .778 .781 .785
CHRYSLER SPECIAL SOLIDS These lobes are for use only in Chrysler engines with .904" tappet diameter. The “Specials” are used in 426c.i. or larger engines. Developed for the Top Fuel drag racing program, these designs offer excellent torque and horsepower. LOBE NUMBER
RATED DURATION
6129 6130 6132 6133 6131 6134
324-7 328-10 330-1 330-2 334-1 335-1
CAMSHAFT TYPE Chrysler Special Rated Duration @ .020" Tappet Lift .904" Min. Dia.
DURATION IN DEGREES @ .050 290 296 290 292 296 300
@ .200 200 208 200 200 203 207
LOBE LIFT .433 .425 .410 .395 .413 .438
TAPPET LIFT @ TDC 106° .176 .193 .170 .175 .186 .193
110° .161 .178 .154 .160 .171 .177
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .650 .638 .615 .592 .620 .657
1.6 .693 .680 .656 .632 .660 .700
1.800.999.0853
1.7 .736 .723 .697 .671 .702 .745
451
SOLID FLAT TAPPET
SOLID FLAT TAPPET mP SoLIDS The MP Series uses a design similar to the TL Series except these have more area due to being designed with more velocity for a .904" minimum tappet diameter . They are very good in Late Model Stock applications where rules allow the larger tappet diameter . note: Cams using these lobes should have provisions for increased oiling . Please consult with a tech representative . LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE MP Rated Duration @ .020" Tappet Lift .904" Min . Dia . .018" Lash
DURATION IN DEGREES @ .050
@ .200
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
106°
110°
1 .5
1 .6
1 .7
6610
274
247
162
.345
.108
.093
.518
.552
.587
6611
284
251
166
.355
.115
.100
.533
.568
.604
6612
288
256
171
.365
.123
.108
.548
.584
.621
mm SoLIDS MM solids are similar to the MH and MHF series but have even more velocity and more area to take complete advantage of the larger .904" Chrysler/Mopar lifter . Please consult with a CAM HELP® technician or one of our engine builder sales personnel before using these profiles to reduce the risk from improper component selection . note: Cams using these lobes should have provisions for increased oiling . Please consult with a tech representative . LOBE NUMBER
RATED DURATION
6580 6581 6582 6579 6583 6584 6585 6586 6587 6588 6589 6590 6591
261 265 269 271 273 277 281 285 289 293 297 301 305
CAMSHAFT TYPE
MM Rated Duration @ .020" Tappet Lift .904" Min . Dia . .018" Lash
DURATION IN DEGREES @ .050 235 239 243 245 247 251 255 259 263 267 271 275 279
@ .200 153 157 161 163 165 169 173 177 181 185 189 193 197
LOBE LIFT .350 .358 .366 .370 .373 .380 .388 .396 .404 .411 .418 .426 .433
TAPPET LIFT @ TDC 106° .089 .096 .104 .108 .111 .119 .126 .134 .142 .149 .157 .164 .172
110° .075 .082 .089 .093 .096 .104 .111 .119 .126 .134 .142 .149 .157
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1 .5 .525 .537 .549 .554 .560 .570 .582 .594 .606 .617 .627 .639 .650
1 .6 .560 .573 .586 .591 .597 .608 .621 .634 .646 .658 .669 .682 .693
1 .7 .595 .609 .622 .628 .634 .646 .660 .673 .687 .699 .711 .724 .736
Engine Break-In Lubricants Utilizing a special blend of extreme pressure additives (including the proper levels of Zinc) not found in conventional engine oils, COMP Cams® Engine Break-In Oil and Additive promote proper break-in and protect against premature camshaft, lifter and valve train failure .
See Page 272
452
WWW.CAMHELP.COM
SOLID ROLLER
HIGH ENERGY™ STREET ROLLER Designed specifically for street use, these street rollers offer unique approach ramps, allowing the use of lower seat pressure to ensure long life. These lobes are very "soundy or throaty" because of the opening and closing ramp designs. LOBE NUMBER
RATED DURATION
1496 4002 1498 1474 1476 4220 4221
268HER-2 272HER-2 276HER-2 280HER-2 288HER-4 300HER-2 308HER-4
CAMSHAFT TYPE High Energy Street Roller Rated Duration @ .015" Tappet Lift Valve Lash 0.020" ™
DURATION IN DEGREES @ .050 224 228 232 236 244 255 262
@ .200 141 144 148 152 158 170 176
LOBE LIFT .350 .350 .350 .366 .366 .383 .383
TAPPET LIFT @ TDC 106° .068 .073 .078 .085 .098 .119 .130
110° .056 .061 .066 .072 .084 .104 .115
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .525 .525 .525 .550 .550 .575 .575
1.6 .560 .560 .560 .586 .586 .613 .613
1.7 .595 .595 .595 .623 .623 .651 .651
SOLID ROLLER
SOLID ROLLER
XTREME ENERGY™ STREET ROLLER This Xtreme family of lobes delivers the responsiveness, torque, and reliability only available with COMP Cams® Xtreme designs coupled with the high rpm power of modern race roller designs. Our development test included Spintron® dynamics evaluations, engine dyno testing, chassis dyno testing, and three Hot Rod Power Tours. Coupled with COMP Cams® roller lifters, these profiles bring street roller technology into the new millennium. LOBE NUMBER
RATED DURATION
Xtreme Energy™ Street Standard Ratio Rated Duration @ .015" Tappet Lift Valve Lash 0.014" - 0.018"
4870 4871 4872 4873 4874 4875 4876 4877 4878 4879
256XSR 262XSR 268XSR 274XSR 280XSR 286XSR 292XSR 298XSR 304XSR 310XSR
@ .050 218 224 230 236 242 248 254 260 266 272
@ .200 141 147 153 159 164 170 176 181 187 193
.360 .360 .368 .376 .380 .384 .388 .392 .398 .404
106° .056 .066 .076 .087 .098 .110 .122 .135 .137 .159
110° .045 .053 .062 .072 .083 .094 .106 .118 .130 .143
1.5 .540 .540 .552 .564 .570 .576 .582 .588 .597 .606
1.6 .576 .576 .589 .602 .608 .614 .621 .627 .637 .646
1.7 .612 .612 .626 .639 .646 .653 .660 .666 .677 .687
Xtreme Energy™ Street High Ratio Rated Duration @ .015" Tappet Lift Valve Lash 0.014" - 0.018"
4850 4851 4855 4854 4852 4853 4856 4857 4858 4859 4860 4861
259 265 267 270 274 280 284 288 292 296 300 308
219 225 227 230 234 240 244 248 252 256 260 268
131 136 138 140 144 149 152 155 161 164 167 173
.330 .330 .330 .330 .330 .335 .335 .335 .346 .346 .346 .346
.055 .064 .067 .070 .076 .086 .092 .099 .106 .112 .119 .132
.045 .053 .055 .058 .064 .053 .079 .085 .092 .099 .105 .118
.495 .495 .495 .495 .495 .503 .503 .503 .519 .519 .519 .519
.528 .528 .528 .528 .528 .536 .536 .536 .554 .554 .554 .554
.561 .561 .561 .561 .561 .570 .570 .570 .588 .588 .588 .588
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
1.800.999.0853
453
SOLID ROLLER
SOLID ROLLER BASE DESIGN ROLLERS These lobes range from extra gentle to very aggressive. Included in this group are the High Torque Roller and High Torque Oval Roller series used in the early 1980s. LOBE NUMBER
RATED DURATION
1460 1462 1464 1465 4034 1473 1466 4000 1609 4035 4059 4242 1611 1612 1613 1479 4066 4244 1617 1628 1658 1620 1486 4025 1469 4062 4087 1630 1394 1659 1639 1619 1392
285-2 286-1 295-2 295-3 295-5 296-1 296-2 305-2 305-3 305-4 306-1 306-2 308-2 309-2 310-2 312-2 316-1 316-2 316-3 324-4 320-1 320-2 321-4 322-1 322-2 323-5 324-2 325-4 327-5 328-1 329-5 319-2 319-3
CAMSHAFT TYPE
Base Designs Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 252 250 262 262 260 260 265 272 270 272 270 273 275 276 280 279 276 284 282 287 281 288 284 282 288 287 286 288 290 286 292 285 285
@ .200 164 162 174 176 170 173 180 186 186 184 186 190 191 196 195 197 186 200 200 201 196 201 196 193 204 202 197 198 204 192 200 202 200
LOBE LIFT .375 .392 .366 .390 .394 .393 .400 .366 .418 .394 .400 .416 .452 .420 .545 .425 .413 .433 .454 .423 .450 .434 .440 .427 .458 .460 .454 .440 .460 .413 .440 .456 .460
TAPPET LIFT @ TDC 106° .110 .112 .128 .128 .116 .124 .137 .146 .146 .151 .145 .153 .156 .163 .165 .167 .150 .176 .173 .174 .164 .179 .170 .163 .185 .180 .171 .176 .179 .163 .177 .179 .173
110° .096 .096 .114 .113 .102 .108 .121 .132 .130 .135 .130 .137 .139 .146 .147 .150 .134 .159 .156 .159 .148 .163 .154 .147 .165 .164 .155 .160 .163 .145 .161 .161 .156
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .563 .588 .549 .585 .591 .590 .600 .549 .627 .591 .600 .624 .678 .630 .818 .638 .620 .650 .681 .635 .675 .651 .660 .641 .687 .690 .681 .660 .690 .620 .660 .684 .690
1.6 .600 .627 .586 .624 .630 .629 .640 .586 .669 .630 .640 .666 .723 .672 .872 .680 .661 .693 .726 .677 .720 .694 .704 .683 .733 .736 .726 .704 .736 .661 .704 .730 .736
1.7 .638 .666 .622 .663 .670 .668 .680 .622 .711 .670 .680 .707 .768 .714 .927 .723 .702 .736 .772 .719 .765 .738 .748 .726 .779 .782 .772 .748 .782 .702 .748 .775 .782
HI-TECH™ ROLLERS These designs are typically used with high rocker ratios (1.65-1.75) and efficient cylinder heads. The Hi-Tech™ .400" is great for Big Block Chevrolet, Big Block Fords and Clevelands. Due to their lower acceleration rates, these lobe designs are also very well suited for small block high endurance applications. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE Hi-Tech™ Rated Duration @ .020" Tappet Lift
454
1461 4210 4211 4058
288-7 296-7 306-7 316-7
DURATION IN DEGREES @ .050 251 259 269 279
@ .200 167 175 182 190
WWW.COMPCAMS.COM
LOBE LIFT .400 .400 .400 .400
TAPPET LIFT @ TDC 106° .116 .129 .146 .161
110° .102 .114 .131 .146
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .600 .600 .600 .600
1.6 .640 .640 .640 .640
1.7 .680 .680 .680 .680
SOLID ROLLER
The Hi-Torque .406", when coupled with higher rocker ratios (1.7 and up), results in very aggressive valve motion. These provide excellent torque curves and great responsiveness. The smaller lobes are great for restricted applications and the larger lobes provide stronger alternatives to the Hi-Torque .440" profiles, when coupled with higher rocker ratios to achieve equivalent valve lift. LOBE NUMBER
RATED DURATION
4600 4601 1477 4209 4206 4207 4208 4205 1481
280-6 284-6 288-6 292-6 296-4 300-7 304-7 308-7 312-14
CAMSHAFT TYPE
Hi-Torque .406" Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 248 252 256 260 264 268 272 276 280
@ .200 169 172 176 180 184 188 192 195 199
LOBE LIFT .406 .406 .406 .406 .406 .406 .406 .406 .406
TAPPET LIFT @ TDC 106° .106 .114 .122 .131 .139 .148 .156 .164 .173
110° .091 .098 .106 .114 .122 .131 .136 .147 .156
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .609 .609 .609 .609 .609 .609 .609 .609 .609
1.6 .650 .650 .650 .650 .650 .650 .650 .650 .650
1.7 .690 .690 .690 .690 .690 .690 .690 .690 .690
SOLID ROLLER
HI-TORQUE .406" ROLLERS
HI-TECH™ .420" EXHAUST ROLLERS These designs are used primarily on the exhaust side of the motor. The Hi-Tech™ .420" offers controlled valve opening which promotes torque over broad ranges. These lobes are great for oval track cams. LOBE NUMBER
RATED DURATION
4005 4007 4003 4027 4029 4023 4046 4045 4047 4019 4049
294-6 296-6 298-6 300-6 302-6 304-6 306-6 308-6 310-6 312-6 316-6
CAMSHAFT TYPE
Hi -Tech™ .420" Exhaust Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 256 258 260 262 264 266 268 270 272 274 278
@ .200 171 173 175 177 179 180 182 183 185 187 189
LOBE LIFT .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420
TAPPET LIFT @ TDC 106° .117 .123 .125 .130 .133 .137 .141 .144 .148 .151 .158
110° .103 .108 .111 .115 .117 .122 .126 .129 .133 .136 .142
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630
1.6 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672
1.7 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714
XTREME ENERGY™ DURAMAX STREET ROLLERS These lobes are similar to the Xtreme Energy™ Street Rollers and are optimized for the GM Duramax applications. Intake profiles are designed around a 1.37:1 ratio and exhaust profiles for a 1.69:1 ratio. The exhaust lobes are slightly less aggressive for the Duramax valve train system. These profiles are designed for .006" to .010" cold lash. The exhaust lobes go up in 14° increments compared to 12° for the intakes, in order to reduce exhaust pumping losses in higher rpm applications. LOBE NUMBER
RATED DURATION
4884 4886 4888
246 258 270
CAMSHAFT TYPE Xtreme Energy Duramax Street Int. Lobes Rated Duration @ .006" Tappet Lift ™
CAMSHAFT TYPE Xtreme Energy™ Duramax Street Exh. Lobes Rated Duration @ .006" Tappet Lift Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050
@ .200
185 197 209
106 119 132
@ .050
@ .200
LOBE LIFT .306 .329 .350
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
106°
110°
1.37
1.37
1.37
.019 .030 .044
.014 .022 .034
.420 .450 .480
.420 .450 .480
.420 .450 .480
106°
110°
1.69
1.69
1.69
4894
254
188
84
.249
.028
.022
.420
.420
.420
4896
268
202
101
.266
.041
.033
.450
.450
.450
4898
282
216
117
.284
.057
.047
.480
.480
.480
1.800.999.0853
455
SOLID ROLLER
SOLID ROLLER HI-TECH™ .420" ROLLERS The Hi-Tech™ .420" is primarily used in oval track racing with good cylinder heads. The ramp designs are easy on valve springs, yet produce good power. They are great for long rod motors. They are also popular in bracket and marine applications where power with durability is a must. Also available in Ford Small Block and Chevy Big Block or 50mm sizes to prevent “cam growth” in the grinding process, allowing the engine builder to have more control over the tuning process. LOBE NUMBER
RATED DURATION
4001 4004 4006 4009 4008 4013 4017 4015 4022 4020 4024 4018 4026 4016 4028 4030 4031 4032
284-5 286-5 288-5 290-5 292-5 294-5 296-5 298-5 300-5 302-5 304-5 306-5 308-5 310-5 312-5 314-5 316-5 318-5
CAMSHAFT TYPE
Hi-Tech™.420" Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 248 250 252 254 256 258 260 262 264 266 268 270 272 274 276 278 280 282
@ .200 165 167 169 171 173 175 177 179 181 183 184 186 188 189 190 192 193 195
LOBE LIFT .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420 .420
TAPPET LIFT @ TDC 106° .108 .112 .116 .119 .123 .127 .131 .136 .140 .143 .146 .150 .154 .157 .160 .163 .166 .170
110° .094 .098 .101 .105 .108 .112 .116 .120 .124 .127 .130 .134 .138 .141 .144 .148 .151 .154
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630 .630
1.6 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672
1.7 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714 .714
RT SERIES ROLLERS The RT series provides shorter seat timing and more area than our Hi-Tech™ .420" series. This results in great torque and power potential. Available in Ford Small Block and Chevy Big Block or 50mm sizes to prevent “cam growth” in the grinding process, allowing the engine builder to have more control over the tuning process of the cam. LOBE NUMBER
RATED DURATION
4121 4123 4124 4126 4127 4130 4128 4129 4131 4132 4133 4134 4135 4136 4137 4139 4138
RT274-1 RT276-2 RT278-3 RT280-1 RT282-1 RT284-1 RT286-1 RT288-1 RT290-1 RT292-1 RT294-1 RT296-1 RT298-1 RT300-1 RT302-1 RT304-1 RT308-1
CAMSHAFT TYPE
RT Series Rated Duration @ .020" Tappet Lift
456
DURATION IN DEGREES @ .050 244 246 248 250 252 254 256 258 260 262 264 266 268 270 272 274 278
WWW.CAMHELP.COM
@ .200 167 169 171 173 175 177 179 181 183 185 186 189 190 191 193 195 197
LOBE LIFT .410 .412 .414 .416 .418 .421 .423 .426 .430 .430 .430 .430 .435 .435 .435 .435 .435
TAPPET LIFT @ TDC 106° .101 .105 .107 .113 .117 .120 .125 .131 .134 .140 .142 .148 .150 .154 .158 .162 .168
110° .086 .089 .092 .097 .101 .104 .109 .114 .117 .123 .125 .130 .132 .137 .141 .144 .151
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .615 .618 .621 .624 .627 .632 .635 .639 .645 .645 .645 .645 .653 .653 .653 .653 .653
1.6 .656 .659 .662 .666 .669 .674 .677 .682 .688 .688 .688 .688 .696 .696 .696 .696 .696
1.7 .697 .700 .704 .707 .711 .716 .719 .724 .731 .731 .731 .731 .740 .740 .740 .740 .740
SOLID ROLLER
Designed with aggressive opening side of the RT series lobe and the easier closing rate of the ever popular Hi-Tech™-5 series, the NC series allows good engine speed, stability and durability. This fast open, slower closing design works very well on the exhaust side of many applications. LOBE NUMBER
RATED DURATION
4151 4152 4150 4153 4149 4145 4147 4144 4146 4143 4148
284 286 288 290 292 295 296 298 300 302 304
CAMSHAFT TYPE
NC Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 252 254 256 258 260 262 264 266 268 270 272
@ .200 172 173 177 178 181 183 183 185 187 190 192
LOBE LIFT .405 .405 .415 .415 .421 .421 .421 .425 .430 .430 .430
TAPPET LIFT @ TDC 106° .115 .117 .123 .125 .131 .138 .140 .143 .146 .153 .158
110° .099 .101 .107 .109 .114 .122 .123 .127 .130 .136 .141
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .608 .608 .623 .623 .632 .632 .632 .638 .645 .645 .645
1.6 .648 .648 .664 .664 .674 .674 .674 .680 .688 .688 .688
1.7 .689 .689 .706 .706 .716 .716 .716 .723 .731 .731 .731
SOLID ROLLER
NC SERIES ROLLERS
NSC SERIES ROLLERS The NSC series is very similar to the original NC series but uses a smoother -6 style closing ramp. This fast open, slower closing design works very well on the exhaust side of many applications, especially those that are larger displacement or higher engine speed than where we would use the original NC designs. LOBE NUMBER
RATED DURATION
4163 4167 4168 4162 4160 4164 4165 4166
309 311 313 315 317 319 321 323
CAMSHAFT TYPE
NSC Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 276 278 280 282 284 286 288 290
@ .200 195 196 198 200 201 203 205 207
LOBE LIFT .440 .440 .440 .440 .440 .440 .440 .440
TAPPET LIFT @ TDC 106° .167 .170 .174 .178 .181 .185 .189 .193
110° .150 .154 .158 .162 .165 .169 .173 .177
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .660 .660 .660 .660 .660 .660 .660 .660
1.6 .704 .704 .704 .704 .704 .704 .704 .704
1.7 .748 .748 .748 .748 .748 .748 .748 .748
RZ SERIES ROLLERS The RZ Rollers are designed for high rpm circle track, drag race and endurance applications that benefit from higher lift while requiring stability and reliability. Designed for 1.6:1 to 1.8:1 rockers, these profiles incorporate the latest developments in high rpm and high rocker ratio developments. LOBE NUMBER
RATED DURATION
4260 4262 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4276 4277
RZ293 RZ297 RZ301 RZ303 RZ305 RZ307 RZ309 RZ311 RZ313 RZ315 RZ317 RZ319 RZ321 RZ325 RZ329
CAMSHAFT TYPE
RZ Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 260 264 268 270 272 274 276 278 280 282 284 286 288 292 296
@ .200 174 178 182 184 186 188 190 192 194 196 197 199 201 205 208
LOBE LIFT .428 .430 .432 .433 .434 .435 .436 .437 .438 .439 .440 .441 .442 .444 .446
TAPPET LIFT @ TDC 106° .122 .129 .137 .141 .145 .149 .153 .157 .161 .164 .168 .172 .176 .183 .191
110° .107 .114 .122 .125 .129 .133 .137 .141 .145 .148 .152 .156 .160 .167 .175
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .643 .645 .648 .650 .651 .653 .654 .656 .657 .659 .660 .662 .663 .666 .669
1.6 .685 .688 .691 .693 .694 .696 .698 .699 .701 .702 .704 .706 .707 .710 .714
1.800.999.0853
1.7 .728 .731 .734 .736 .738 .740 .741 .743 .745 .746 .748 .750 .751 .755 .758
457
SOLID ROLLER
SOLID ROLLER RZ LOW LIFT ROLLERS These lower lift versions of the RZ family work very well in high endurance applications where maximum valve lift needs to be limited to ensure maximum valve spring life. LOBE NUMBER
RATED DURATION
2314 2315 4294 2318 4293 4295 4283 4286 4284 4278 4285 4287 4296 4279 2735 2298
283 287 289 291 291 293 295 295 297 299 301 301 303 305 315 317
CAMSHAFT TYPE
RZ Low Lift Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 250 254 256 258 258 260 262 262 264 266 268 268 270 272 282 284
@ .200 161 164 167 168 171 171 171 175 174 178 178 180 181 182 194 193
LOBE LIFT .370 .370 .390 .370 .400 .390 .370 .400 .375 .400 .380 .400 .385 .380 .420 .380
TAPPET LIFT @ TDC 106° .103 .110 .113 .117 .118 .121 .124 .125 .128 .133 .135 .136 .139 .143 .164 .163
110° .089 .096 .099 .103 .103 .106 .110 .110 .113 .118 .121 .121 .125 .128 .148 .149
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .555 .555 .585 .555 .600 .585 .555 .600 .563 .600 .570 .600 .578 .570 .630 .570
1.6 .592 .592 .624 .592 .640 .624 .592 .640 .600 .640 .608 .640 .616 .608 .672 .608
1.7 .629 .629 .663 .629 .680 .663 .629 .680 .638 .680 .646 .680 .655 .646 .714 .646
RX SERIES ROLLERS These are similar to our RT Series but are designed for a higher rpm operating range. These were developed to allow the performance of RT designs in applications that operate well over 8400 rpm such as the NASCAR Nationwide, Camping World Truck series and ARCA engines. RX profiles were developed using dynamic testing to ensure stability over 9000 rpm even when coupled with a 1.7:1 rocker arm. LOBE NUMBER
RATED DURATION
4301 4302 4303 4304 4305 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4340 4341
286 288 290 292 294 296 298 300 302 304 306 308 310 312 314 316 318 320 322
CAMSHAFT TYPE
RX Series Rated Duration @ .020" Tappet Lift
458
DURATION IN DEGREES @ .050 253 255 257 259 261 263 265 267 269 271 273 275 277 279 281 283 285 287 289
@ .200 172 174 176 177 179 181 183 185 187 189 191 193 195 197 199 201 203 205 207
WWW.COMPCAMS.COM
LOBE LIFT .427 .428 .429 .430 .431 .432 .433 .434 .435 .436 .437 .438 .439 .440 .440 .440 .440 .440 .440
TAPPET LIFT @ TDC 106° .114 .118 .122 .126 .130 .134 .139 .143 .147 .151 .155 .160 .164 .168 .172 .176 .180 .185 .189
110° .099 .103 .107 .110 .114 .118 .122 .126 .130 .134 .138 .143 .147 .151 .155 .159 .163 .167 .172
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .641 .642 .644 .645 .647 .648 .650 .651 .653 .654 .656 .657 .659 .660 .660 .660 .660 .660 .660
1.6 .683 .685 .686 .688 .690 .691 .693 .694 .696 .698 .699 .701 .702 .704 .704 .704 .704 .704 .704
1.7 .726 .728 .729 .731 .733 .734 .736 .738 .740 .741 .743 .745 .746 .748 .748 .748 .748 .748 .748
SOLID ROLLER
The CR series profiles are excellent for high rpm, high rocker ratio applications where good valve train components can be used. The smaller profiles work well in restricted applications where extended life is required and the larger profiles are excellent in high rpm open applications. LOBE NUMBER
RATED DURATION
4345 4346 4347 4348 4349 4382 4383 4384 4385 4386 2486 4387 4388 2488 4389 4390 2490 4391 4682 2492 4683 4684 2494 4685 4686 4687
CR281 CR283 CR285 CR287 CR289 CR291 CR293 CR295 CR297 CR299 299 CR301 CR303 303 CR305 CR307 307 CR309 CR311 311 CR313 CR315 315 CR317 CR319 CR321
CAMSHAFT TYPE
CR Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 250 252 254 256 258 260 262 264 266 268 268 270 272 272 274 276 276 278 280 280 282 284 284 286 288 290
@ .200 168 170 172 174 176 178 179 181 183 185 186 186 188 190 190 192 194 193 195 198 197 199 201 200 202 204
LOBE LIFT .395 .395 .395 .395 .395 .395 .395 .395 .395 .395 .420 .395 .395 .420 .395 .395 .420 .395 .395 .420 .395 .395 .420 .395 .395 .395
TAPPET LIFT @ TDC 106° .111 .115 .119 .123 .127 .131 .135 .139 .143 .147 .147 .150 .154 .156 .158 .161 .164 .165 .169 .172 .172 .176 .180 .180 .183 .187
110° .096 .100 .104 .107 .111 .115 .119 .123 .127 .131 .131 .134 .138 .139 .142 .146 .147 .149 .153 .155 .157 .161 .163 .165 .168 .172
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .672 .672 .672 .672 .672 .672 .672 .672 .672 .672 .714 .672 .672 .714 .672 .672 .714 .672 .672 .714 .672 .672 .714 .672 .672 .672
1.75 .691 .691 .691 .691 .691 .691 .691 .691 .691 .691 .735 .691 .691 .735 .691 .691 .735 .691 .691 .735 .691 .691 .735 .691 .691 .691
1.8 .711 .711 .711 .711 .711 .711 .711 .711 .711 .711 .756 .711 .711 .756 .711 .711 .756 .711 .711 .756 .711 .711 .756 .711 .711 .711
SOLID ROLLER
CR SERIES ROLLERS
CR LIFT RULE ROLLERS These low lift designs are based on the CR series rollers and are specifically designed for lift rule applications, such as USAR Cup. Typically they will be used with either 1.65:1 or 1.7:1 rocker ratios but would be stable with up to 1.8:1 ratios. LOBE NUMBER
RATED DURATION
CR Lift Rule .367" Rated Duration @ .020" Tappet Lift
4436 4427 4428 4429 4430 4431 4432 4433 4438
275 279 283 287 291 295 299 303 307
@ .050 244 248 252 256 260 264 268 272 276
@ .200 161 165 168 172 175 179 182 186 189
.367 .367 .367 .367 .367 .367 .367 .367 .367
106° .100 .107 .115 .123 .130 .138 .146 .153 .159
110° .085 .092 .100 .107 .115 .122 .130 .137 .145
1.6 .587 .587 .587 .587 .587 .587 .587 .587 .587
1.65 .606 .606 .606 .606 .606 .606 .606 .606 .606
1.7 .624 .624 .624 .624 .624 .624 .624 .624 .624
CR Lift Rule .378" Rated Duration @ .020" Tappet Lift
4445 4447 4449 4451
283 287 291 295
252 256 260 264
168 172 175 179
.378 .378 .378 .378
.115 .123 .131 .138
.100 .107 .115 .123
.605 .605 .605 .605
.624 .624 .624 .624
.643 .643 .643 .643
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
1.800.999.0853
459
SOLID ROLLER
SOLID ROLLER ZT SERIES ROLLERS The ZT rollers are a high rocker ratio, high rpm series designed to take advantage of new valve spring developments that allow valve lifts up to and above .750" in endurance applications. These are designed for NASCAR Nationwide, Camping World Truck series, ARCA, and other endurance applications that have similar rpm and lift requirements. Recommended for use with either COMP® #26099 or #26091 springs. LOBE NUMBER
RATED DURATION
4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4826 4827
290 292 294 296 298 300 302 304 306 308 310 312 314
CAMSHAFT TYPE
ZT Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 258 260 262 264 266 268 270 272 274 276 278 280 282
@ .200 175 177 179 181 182 184 186 188 190 192 194 196 198
LOBE LIFT .406 .407 .408 .409 .410 .411 .412 .413 .412 .416 .418 .418 .420
TAPPET LIFT @ TDC 106° .124 .128 .133 .137 .141 .145 .149 .153 .157 .161 .165 .169 .173
110° .110 .114 .117 .121 .125 .129 .133 .137 .141 .144 .149 .152 .157
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .690 .692 .694 .695 .697 .699 .700 .702 .700 .707 .711 .711 .714
1.75 .711 .712 .714 .716 .718 .719 .721 .723 .721 .728 .732 .732 .735
1.8 .731 .733 .734 .736 .738 .740 .742 .743 .742 .749 .752 .752 .756
ZS SERIES ROLLERS The ZS Rollers are a high ratio roller series for restricted applications limited to below 8400 rpm. These are very good for applications that benefit from higher lift than the HRR series. These profiles work well with the new generation valve springs such as COMP® #26099 and #26091. The ZS Series II are the same as the .413" lobe lift versions except these have increasing lobe lift as the duration increases. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE
DURATION IN DEGREES
ZS Series .413" Lift Rated Duration @ .020" Tappet Lift
4402 4404 4405 4406 4407 4408 4409 4416 4418
284 288 290 292 294 296 298 302 306
@ .050 254 258 260 262 264 266 268 272 276
ZS Series II Rated Duration @ .020" Tappet Lift
2950 2952 2953 2954 2958
280 284 286 288 296
250 254 256 258 266
@ .200 175 179 181 183 184 186 188 192 195 175 179 181 183 184
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
.413 .413 .413 .413 .413 .413 .413 .413 .413
106° .122 .130 .134 .139 .143 .147 .151 .159 .167
110° .106 .114 .118 .122 .126 .130 .134 .142 .150
1.7 .702 .702 .702 .702 .702 .702 .702 .702 .702
1.75 .723 .723 .723 .723 .723 .723 .723 .723 .723
1.8 .743 .743 .743 .743 .743 .743 .743 .743 .743
.420 .424 .426 .428 .434
.114 .122 .126 .131 .147
.098 .106 .110 .114 .130
.714 .721 .724 .728 .738
.735 .742 .746 .749 .760
.756 .763 .767 .770 .781
TS SERIES ROLLERS These are an additional series of high rocker ratio profiles that are similar to both the ZT and ZS series, but these are designed for slightly less rocker ratio. LOBE NUMBER
RATED DURATION
4837 4838 4839 4840 4841 4842
295 297 299 301 303 305
CAMSHAFT TYPE TS Series Rated Duration @ .020" Tappet Lift
460
DURATION IN DEGREES @ .050 264 266 268 270 272 274
WWW.CAMHELP.COM
@ .200 183 185 187 189 191 192
LOBE LIFT .422 .423 .425 .426 .427 .428
TAPPET LIFT @ TDC 106° .141 .145 .149 .153 .157 .161
110° .125 .129 .133 .137 .141 .145
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .717 .719 .723 .724 .726 .728
1.75 .739 .740 .744 .746 .747 .749
1.8 .760 .761 .765 .767 .769 .770
SOLID ROLLER
These TD designs are excellent for high ratio, four barrel gauge 390 carb rules such as NASCAR Nationwide and Camping World Truck series applications. The TJs have slightly more lift but are a little smoother. The TJS series is basically the same as the TJ except for a slightly softer closing ramp. LOBE NUMBER
RATED DURATION
TD Series Rated Duration @ .020" Tappet Lift
2978 2979 2980 2981 2982 4321 2983 2984 2985 4327 4328 4329 2989
288 290 292 294 296 298 300 302 304 306 308 310 312
@ .050 258 260 262 264 266 268 270 272 274 276 278 280 282
@ .200 176 178 180 182 184 186 188 190 192 193 195 197 199
.411 .412 .413 .414 .415 .416 .418 .420 .421 .424 .426 .428 .430
106° .127 .131 .135 .139 .143 .147 .151 .156 .159 .163 .167 .171 .175
110° .112 .116 .119 .123 .127 .131 .135 .139 .143 .147 .151 .155 .159
1.7 .699 .700 .702 .704 .706 .707 .711 .714 .716 .721 .724 .728 .731
1.75 .719 .721 .723 .725 .726 .728 .732 .735 .737 .742 .746 .749 .753
1.8 .740 .742 .743 .745 .747 .749 .752 .756 .758 .763 .767 .770 .774
TJ Series Rated Duration @ .020" Tappet Lift
2962 2963 2964 2965
296 298 300 302
266 268 270 272
184 185 187 189
.420 .422 .424 .426
.143 .147 .151 .156
.127 .131 .135 .139
.714 .717 .721 .724
.735 .739 .742 .746
.756 .760 .763 .767
TJS Series Rated Duration @ .020" Tappet Lift
2881 2882 2885
297 299 305
266 268 274
183 185 191
.419 .421 .427
.412 .146 .158
.126 .130 .142
.712 .716 .726
.733 .737 .747
.754 .758 .769
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
SOLID ROLLER
TD, TJ & TJS SERIES ROLLERS
HIGH RATIO RESTRICTED ROLLERS The HRR designs, when coupled with high rocker ratios, result in extremely quick valve action. 8100 rpm maximum with light valve train. Very good in restricted applications. LOBE NUMBER
RATED DURATION
4358 4359 4361 4362 4363 4364 4198 4365 4366 4199 4367 4196 4368 4370 4371 4372 4373 4374 4375 4376 4377 4378
HRR260 HRR262 HRR264 HRR266 HRR268 HRR270 272 HRR272 HRR274 276 HRR276 278 HRR278 HRR282 HRR284 HRR286 HRR288 HRR290 HRR292 HRR294 HRR296 HRR298
CAMSHAFT TYPE
High Ratio Restricted Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 230 232 234 236 238 240 242 242 244 246 246 248 248 252 254 256 258 260 262 264 266 268
@ .200 152 154 156 158 160 162 163 164 166 167 168 169 170 173 175 177 179 180 182 184 186 188
LOBE LIFT .374 .377 .380 .383 .386 .389 .380 .392 .396 .380 .396 .380 .396 .396 .396 .396 .396 .396 .396 .396 .396 .396
TAPPET LIFT @ TDC 106° .078 .082 .085 .089 .093 .097 .101 .101 .105 .109 .109 .113 .113 .121 .125 .129 .133 .137 .141 .145 .149 .153
110° .065 .068 .071 .075 .078 .082 .085 .085 .089 .093 .093 .097 .097 .104 .108 .112 .116 .120 .124 .128 .133 .137
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .636 .641 .646 .651 .656 .661 .646 .666 .673 .646 .673 .646 .673 .673 .673 .673 .673 .673 .673 .673 .673 .673
1.75 .655 .660 .665 .670 .676 .681 .665 .686 .693 .665 .693 .665 .693 .693 .693 .693 .693 .693 .693 .693 .693 .693
1.800.999.0853
1.8 .673 .679 .684 .689 .695 .700 .684 .706 .713 .684 .713 .684 .713 .713 .713 .713 .713 .713 .713 .713 .713 .713
461
SOLID ROLLER
SOLID ROLLER RP SERIES ROLLERS The RP Rollers are a high ratio roller series for restricted applications limited to below 8400 rpm. These are based off of our latest flat tappet restrictor plate designs but have increased area as allowed with roller tappets. For use with 1.8 to 1.95:1 rocker ratios. LOBE NUMBER
RATED DURATION
2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520
270 272 274 276 278 280 282 284 286 288 290 292 294 296
CAMSHAFT TYPE
RP Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 240 242 244 246 248 250 252 254 256 258 260 262 264 266
@ .200 159 161 163 165 166 168 170 172 173 175 177 179 180 182
LOBE LIFT .381 .381 .381 .381 .381 .381 .381 .381 .381 .381 .381 .381 .381 .381
TAPPET LIFT @ TDC 106° .093 .097 .101 .104 .108 .112 .115 .119 .123 .127 .131 .135 .138 .142
110° .080 .083 .086 .090 .093 .097 .101 .104 .108 .112 .115 .119 .123 .127
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 .686 .686 .686 .686 .686 .686 .686 .686 .686 .686 .686 .686 .686 .686
1.85 .705 .705 .705 .705 .705 .705 .705 .705 .705 .705 .705 .705 .705 .705
1.9 .724 .724 .724 .724 .724 .724 .724 .724 .724 .724 .724 .724 .724 .724
SP SERIES ROLLERS The SP Rollers are a high ratio roller series for restricted applications limited to below 8200 rpm. These lobes are more aggressive than the RP series and can be used successfully with lower rocker ratios. For use with 1.7 to 1.9:1 rocker ratios. Also used in some hydraulic roller applications. LOBE NUMBER
RATED DURATION
1514 1515 4793 4784 4785 4788 4789 4830 4831
264 268 273 275 277 279 281 283 285
CAMSHAFT TYPE
SP Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 236 240 245 247 249 251 253 255 257
@ .200 158 161 166 168 170 172 174 176 178
LOBE LIFT .374 .374 .378 .380 .382 .384 .386 .388 .390
TAPPET LIFT @ TDC 106° .089 .096 .108 .112 .116 .120 .124 .128 .133
110° .074 .081 .092 .096 .100 .104 .108 .112 .116
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .636 .636 .643 .646 .649 .653 .656 .660 .663
1.8 .673 .673 .680 .684 .688 .691 .695 .698 .702
1.9 .711 .711 .718 .722 .726 .730 .733 .737 .741
RC SERIES ROLLERS The RC rollers are designed to be faster off the seat than the RT profiles with more area than the High Torque .440" profiles. These are slightly less aggressive than the new TK profiles. Very good for Sprint Car and Late Model applications. Also used in some hydraulic roller applications. LOBE NUMBER
RATED DURATION
4176 4178 4180 4181 4182 4183 4184 4185 4186
280 284 288 290 292 294 296 298 300
CAMSHAFT TYPE
RC Series Rated Duration @ .020" Tappet Lift
462
DURATION IN DEGREES @ .050 250 254 258 260 262 264 266 268 270
@ .200 175 178 182 184 186 188 190 192 194
WWW.COMPCAMS.COM
LOBE LIFT .425 .425 .430 .430 .430 .430 .435 .435 .435
TAPPET LIFT @ TDC 106° .118 .127 .136 .140 .144 .149 .153 .158 .162
110° .101 .110 .118 .122 .127 .131 .135 .140 .144
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .638 .638 .645 .645 .645 .645 .653 .653 .653
1.6 .680 .680 .688 .688 .688 .688 .696 .696 .696
1.7 .723 .723 .731 .731 .731 .731 .740 .740 .740
SOLID ROLLER
The TK series is our most aggressive standard rocker ratio series to date. These designs get from .020" to .050" tappet lift and back from .050" to .020" tappet lift in only 28°. That quickness makes this series the most intense roller profiles COMP® has ever released, providing more duration at .200" and more area than comparable profiles. Excellent for all out Sprint Car and Late Model applications. Please consult with a CAM HELP® technician or one of our engine builder sales personnel for proper component selection. LOBE NUMBER
RATED DURATION
TK Series Rated Duration @ .020" Tappet Lift
4639 4640 4641 4642 4643 4609 4610 4611 4612 4613 4614 4572 4615 4573 4616 4574 4617 4575 4618 4576 4619 4620 4621 4622 4623 4624 4625 4627 4628
TK258 TK262 TK266 TK270 TK274 TK277 TK279 TK281 TK283 TK285 TK287 TK289-420 TK289 TK291-420 TK291 TK293-420 TK293 TK295-420 TK295 TK297-420 TK297 TK299 TK301 TK303 TK305 TK307 TK309 TK311 TK313
@ .050 230 234 238 242 246 249 251 253 255 257 259 261 261 263 263 265 265 267 267 269 269 271 273 275 277 279 281 283 285
@ .200 156 160 164 168 172 175 177 179 180 182 184 184 186 186 188 188 190 190 191 191 193 195 197 199 201 202 204 206 208
.405 .410 .415 .420 .425 .430 .430 .430 .430 .430 .430 .420 .430 .420 .430 .420 .430 .420 .430 .420 .430 .430 .430 .430 .430 .430 .430 .430 .430
106° .078 .085 .093 .101 .109 .118 .122 .127 .131 .135 .140 .147 .144 .149 .149 .151 .153 .155 .157 .159 .162 .166 .170 .174 .178 .183 .187 .191 .195
110° .064 .071 .078 .085 .093 .101 .105 .109 .114 .118 .122 .129 .126 .131 .131 .134 .135 .138 .140 .142 .144 .148 .154 .157 .161 .165 .169 .173 .178
1.5 .608 .615 .623 .630 .638 .645 .645 .645 .645 .645 .645 .630 .645 .630 .645 .630 .645 .630 .645 .630 .645 .645 .645 .645 .645 .645 .645 .645 .645
1.6 .648 .656 .664 .672 .680 .688 .688 .688 .688 .688 .688 .672 .688 .672 .688 .672 .688 .672 .688 .672 .688 .688 .688 .688 .688 .688 .688 .688 .688
1.7 .689 .697 .706 .714 .723 .731 .731 .731 .731 .731 .731 .714 .731 .714 .731 .714 .731 .714 .731 .714 .731 .731 .731 .731 .731 .731 .731 .731 .731
TK Series − .455" Rated Duration @ .020" Tappet Lift 1.948" or Larger Journals Only
1528 1530 1532 1534 1536 1538 1540 1542
273 277 281 285 289 293 297 301
245 249 253 257 261 265 269 273
172 176 179 183 187 190 194 198
.455 .455 .455 .455 .455 .455 .455 .455
.109 .118 .127 .135 .144 .153 .162 .170
.093 .101 .109 .118 .126 .135 .144 .154
.683 .683 .683 .683 .683 .683 .683 .683
.728 .728 .728 .728 .728 .728 .728 .728
.774 .774 .774 .774 .774 .774 .774 .774
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
1.800.999.0853
SOLID ROLLER
TK SERIES ROLLERS
463
SOLID ROLLER
SOLID ROLLER SP-TK HI-LIFT ROLLERS These higher lift designs are based on the TK .455" series rollers but have faster opening side velocities and more lobe lift. For use with 1.948" or larger journals only. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE SP-TK Hi-Lift Rated Duration @ .020" Tappet Lift 1.948" or Larger Journals Only
1519 1520 1521 1522 1523 1524
276 280 284 288 292 296
DURATION IN DEGREES @ .050 248 252 256 260 264 268
@ .200 175 179 183 187 190 194
LOBE LIFT .470 .470 .470 .470 .470 .470
TAPPET LIFT @ TDC 106° .114 .123 .131 .140 .149 .158
110° .097 .105 .113 .122 .131 .140
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .705 .705 .705 .705 .705 .705
1.6 .752 .752 .752 .752 .752 .752
1.7 .799 .799 .799 .799 .799 .799
TK LIFT RULE .347" ROLLERS These low lift designs are based on the TK series rollers and are specifically designed for lift rule applications, such as USAR Cup. Typically they will be used with 1.8:1 ratios. LOBE NUMBER
RATED DURATION
1416 1417 1418 1419 4421 4422 4423 4424 1427 1429
263 267 271 275 279 283 287 291 295 299
CAMSHAFT TYPE
TK Lift Rule .347" Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 235 239 243 247 251 255 259 263 267 271
@ .200 154 158 161 165 168 171 174 177 180 184
LOBE LIFT .347 .347 .347 .347 .347 .347 .347 .347 .347 .347
TAPPET LIFT @ TDC 106° .089 .096 .104 .111 .119 .126 .134 .141 .147 .154
110° .074 .081 .089 .096 .104 .111 .118 .126 .133 .140
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.75 .607 .607 .607 .607 .607 .607 .607 .607 .607 .607
1.8 .625 .625 .625 .625 .625 .625 .625 .625 .625 .625
1.85 .642 .642 .642 .642 .642 .642 .642 .642 .642 .642
SPL SERIES ROLLERS The SPL rollers are very similar to the TK family but have special ramps designed to be used with looser lash values. These lobes are designed for hot lash settings in the .022" to .028" range. Otherwise, they should perform as well as the TK family in high torque applications that respond well to aggressive lobe profiles. LOBE NUMBER
RATED DURATION
2906 2907 2908 2909
291 295 299 303
CAMSHAFT TYPE SPL Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 260 264 268 272
@ .200 184 188 192 195
LOBE LIFT .435 .435 .435 .435
TAPPET LIFT @ TDC 106° .137 .146 .154 .163
110° .120 .128 .137 .145
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .696 .696 .696 .696
1.7 .740 .740 .740 .740
1.8 .783 .783 .783 .783
VK LIFT RULE .323" ROLLERS These low lift designs are similar to the low lift TKs but are optimized with quicker ramps for the lower lobe lift. Designed for lift rule solid roller applications including revised NMRA specs. LOBE NUMBER
RATED DURATION
2688 2689 2690 2691 2692 2693 2694
276 280 284 288 292 296 300
CAMSHAFT TYPE
VK Lift Rule .323" Rated Duration @ .020" Tappet Lift
464
DURATION IN DEGREES @ .050 249 253 257 261 265 269 273
WWW.CAMHELP.COM
@ .200 161 164 167 171 174 178 181
LOBE LIFT .323 .323 .323 .323 .323 .323 .323
TAPPET LIFT @ TDC 106° .112 .119 .126 .133 .140 .147 .153
110° .098 .105 .112 .119 .126 .133 .139
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.55 .501 .501 .501 .501 .501 .501 .501
1.6 .517 .517 .517 .517 .517 .517 .517
1.65 .533 .533 .533 .533 .533 .533 .533
SOLID ROLLER
The DSZ rollers are tight lash designs based on our high lift DSP and DSS series but optimized with quicker ramps for shorter duration applications. These lobes have shorter seat timing than even the TK series. DSZ rollers provide great torque and power in limited engine speed or limited ratio applications. DSZ profiles are also very good with limited travel hydraulic roller lifters if noise is not a primary concern. LOBE NUMBER
RATED DURATION
DSZ Series Rated Duration @ .020" Tappet Lift Journal = B,F,R,M
12500 12502 12504 12506 12508 12510
@ .020 267 271 275 279 283 287
@ .050 240 244 248 252 256 260
@ .200 166 170 174 177 181 185
.394 .398 .402 .406 .410 .414
106° .098 .106 .115 .123 .132 .141
110° .083 .090 .098 .106 .115 .123
1.5 .591 .597 .603 .609 .615 .621
1.6 .630 .637 .643 .650 .656 .662
1.7 .670 .677 .683 .690 .697 .704
DSZ H Series Rated Duration @ .020" Tappet Lift Journal = F,R,M
12522 12524 12526 12528 12530
271 275 279 283 287
244 248 252 256 260
170 174 178 182 186
.415 .419 .423 .427 .431
.106 .115 .124 .132 .141
.090 .098 .106 .115 .124
.623 .629 .635 .641 .647
.664 .670 .677 .683 .690
.706 .712 .719 .726 .733
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
SOLID ROLLER
DSZ SERIES ROLLERS
CSZ SERIES ROLLERS The CSZ rollers are "tweaked" versions of the DSZ profiles for use in standard jounal Small Block Chevy applications and higher lift Big Block Chevy or 50mm. These are not quite as quick as the DSZ profiles, and they give up a little area and stability compared to the larger journal versions. However, this as close to a DSZ as you can get with a smaller journal. Also good for hydraulic rollers if noise is not a primary concern. LOBE NUMBER
RATED DURATION
CSZ Series Rated Duration @ .020" Tappet Lift Journal = S
12550 12552 12554 12556 12558 12560
@ .020 268 272 276 280 284 288
@ .050 240 244 248 252 256 260
@ .200 165 169 173 177 181 185
.394 .398 .402 .406 .410 .414
106° .098 .106 .114 .123 .132 .140
110° .082 .090 .098 .106 .114 .123
1.5 .591 .597 .603 .609 .615 .621
1.6 .630 .637 .643 .650 .656 .662
1.7 .670 .677 .683 .690 .697 .704
CSZ H Series Rated Duration @ .020" Tappet Lift Journal = S, B
12572 12574 12576 12578 12580
272 276 280 284 288
244 248 252 256 260
170 174 178 182 186
.415 .419 .423 .427 .431
.106 .114 .123 .132 .141
.090 .098 .106 .114 .123
.623 .629 .635 .641 .647
.664 .670 .677 .683 .690
.706 .712 .719 .726 .733
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
HI-TECH .440" INTAKE ROLLERS These lobes are to be used in medium to large cubic inch engines. The Hi-Tech™ .440" are designed with ported cylinder heads in mind and are easy on springs. These designs are very stable at high engine speeds. LOBE NUMBER
RATED DURATION
3207 4076 4119 4077 4078 4079 4080 4081 4082
296-16 301-6 303-6 305-6 309-6 313-6 317-6 321-6 325-6
CAMSHAFT TYPE
Hi-Tech™ .440" Int. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 260 264 266 268 272 276 280 284 287
@ .200 178 181 183 184 187 189 192 195 198
LOBE LIFT .440 .440 .440 .440 .440 .440 .440 .440 .440
TAPPET LIFT @ TDC 106° .132 .141 .144 .147 .153 .157 .161 .168 .173
110° .116 .125 .129 .132 .137 .142 .146 .153 .158
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .660 .660 .660 .660 .660 .660 .660 .660 .660
1.6 .704 .704 .704 .704 .704 .704 .704 .704 .704
1.800.999.0853
1.7 .748 .748 .748 .748 .748 .748 .748 .748 .748
465
SOLID ROLLER
SOLID ROLLER HI-TORQUE .440" These designs are very aggressive and can be used with a variety of rocker ratios. Smaller designs work well in oval track motors and larger designs work in drag racing applications. The High Torque .440" designs are stable to 8200+ rpm. LOBE NUMBER
RATED DURATION
4217 4216 4240 4241 4243 4245 4252 4253 4213 4214 4254
278-8 280-8 284-8 288-8 292-8 296-8 300-8 304-8 308-8 312-8 316-8
CAMSHAFT TYPE
Hi-Torque .440" Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 250 252 256 260 264 268 272 276 280 284 288
@ .200 174 176 178 182 186 190 194 197 201 205 210
LOBE LIFT .440 .440 .440 .440 .440 .440 .440 .440 .440 .440 .440
TAPPET LIFT @ TDC 106° .115 .119 .122 .131 .140 .149 .157 .177 .185 .191 .198
110° .099 .102 .105 .114 .123 .131 .139 .160 .167 .174 .180
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .660 .660 .660 .660 .660 .660 .660 .660 .660 .660 .660
1.6 .704 .704 .704 .704 .704 .704 .704 .704 .704 .704 .704
1.7 .748 .748 .748 .748 .748 .748 .748 .748 .748 .748 .748
HI-TORQUE .460" ROLLERS The High Torque .460" is primarily used in drag racing applications with or without ported heads. They are less aggressive than the High Torque .440" designs. LOBE NUMBER
RATED DURATION
1393 4075 1395
319-7 323-7 327-7
CAMSHAFT TYPE Hi-Torque .460" Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 285 287 290
@ .200 200 202 205
LOBE LIFT .460 .460 .460
TAPPET LIFT @ TDC 106° .180 .185 .192
110° .163 .169 .176
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .690 .690 .690
1.6 .736 .736 .736
1.7 .782 .782 .782
HI-TORQUE .420" EXHAUST ROLLERS The High Torque .420" Exhaust is primarily used in drag racing applications with or without ported heads and can be used with a variety of rocker ratios. LOBE NUMBER
RATED DURATION
1660 1480 4070 4065
307-4 311-4 317-2 323-6
CAMSHAFT TYPE Hi-Torque .420" Exh. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 275 279 283 288
@ .200 192 194 197 200
LOBE LIFT .420 .420 .420 .420
TAPPET LIFT @ TDC 106° .165 .173 .172 .177
110° .152 .156 .156 .161
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .630 .630 .630 .630
1.6 .672 .672 .672 .672
1.7 .714 .714 .714 .714
HIGH RATIO − HIGH RPM SUPER STOCK ROLLERS These profiles are designed to increase high rpm performance in NHRA Super Stock applications when coupled with a 1.8:1 to 2.0:1 rocker arm. Optimized for the higher rpm capability of the latest Super Stock cylinder heads. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE High Ratio-High RPM Super Stock Rated Duration @ .020" Tappet Lift
466
4480 4482 4483 4484 4485 4486
298 302 304 306 308 310
DURATION IN DEGREES @ .050 266 270 272 274 276 278
@ .200 182 186 188 189 191 193
WWW.COMPCAMS.COM
LOBE LIFT .414 .414 .414 .414 .416 .418
TAPPET LIFT @ TDC 106° .136 .143 .147 .151 .155 .160
110° .119 .127 .131 .135 .139 .143
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 .745 .745 .745 .745 .749 .752
1.9 .787 .787 .787 .787 .790 .794
2.0 .828 .828 .828 .828 .832 .836
SOLID ROLLER
The HXL Series Rollers are intended for high lift applications that require maximum torque and extended rpm. These fall somewhere in between the RX and TK series in terms of aggressiveness but provide more lobe lift. They are closest to the High Torque .440" lobes but have incorporated our latest profile advancements that should allow higher engine speeds and improved dynamics. LOBE NUMBER
RATED DURATION
2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2208 2209 2210
281 283 285 287 289 291 293 295 297 299 301 303 305 307 309 311 313 315 317
CAMSHAFT TYPE
HXL Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 252 254 256 258 260 262 264 266 268 270 272 274 276 278 280 282 284 286 288
@ .200 175 177 179 181 183 185 187 189 191 193 195 197 199 201 202 204 206 208 210
LOBE LIFT .434 .436 .438 .440 .442 .444 .446 .448 .450 .452 .454 .454 .454 .454 .454 .454 .454 .454 .454
TAPPET LIFT @ TDC 106° .118 .122 .126 .130 .135 .139 .144 .148 .152 .157 .161 .166 .170 .174 .178 .183 .187 .191 .195
110° .102 .106 .110 .114 .118 .122 .126 .130 .135 .139 .143 .148 .152 .156 .161 .165 .169 .173 .177
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .694 .698 .701 .704 .707 .710 .714 .717 .720 .723 .726 .726 .726 .726 .726 .726 .726 .726 .726
1.7 .738 .741 .745 .748 .751 .755 .758 .762 .765 .768 .772 .772 .772 .772 .772 .772 .772 .772 .772
1.8 .781 .785 .788 .792 .796 .799 .803 .806 .810 .814 .817 .817 .817 .817 .817 .817 .817 .817 .817
SOLID ROLLER
HXL SERIES ROLLERS
HXX SERIES ROLLERS The HXX series rollers are exhaust optimized versions of our popular HXL Intake lobes. LOBE NUMBER
RATED DURATION
12198 12200 12202 12204 12206 12208
294 298 302 306 310 314
CAMSHAFT TYPE HXX Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 264 268 272 276 280 284
@ .200 187 191 194 198 202 206
LOBE LIFT .445 .445 .445 .445 .445 .445
TAPPET LIFT @ TDC 106° .143 .152 .161 .169 .178 .187
110° .126 .134 .143 .152 .161 .169
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .668 .668 .668 .668 .668 .668
1.6 .712 .712 .712 .712 .712 .712
1.7 .757 .757 .757 .757 .757 .757
HPX SERIES ROLLERS The HPX Series Rollers are higher lift, more aggressive versions of the HXX lobes for use in larger journal applications. These also work well with less rocker ratio and can be used on the intake or exhaust. LOBE NUMBER
RATED DURATION
12230 12232 12234
316 320 324
CAMSHAFT TYPE HPX Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 288 292 296
@ .200 215 219 223
LOBE LIFT .495 .495 .495
TAPPET LIFT @ TDC 106° .208 .218 .227
110° .188 .198 .207
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .743 .743 .743
1.6 .792 .792 .792
1.800.999.0853
1.7 .842 .842 .842
467
SOLID ROLLER
SOLID ROLLER HXX LL SERIES ROLLERS These are softer ramp designs, like the HXL designs, but with lower lift. Work well for AL block applications with higher ratios, or anywhere as an exhaust lobe. LOBE NUMBER
RATED DURATION
12050 12052 12054
292 296 300
CAMSHAFT TYPE HXX LL Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 262 266 270
@ .200 180 184 188
LOBE LIFT .390 .392 .394
TAPPET LIFT @ TDC 106° .135 .143 .151
110° .119 .127 .134
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .585 .588 .591
1.7 .663 .666 .670
1.8 .702 .706 .709
IXL SERIES ROLLERS The IXL Series is very similar to the HXL but is optimized for higher rocker ratios. This family also incorporates a design characteristic which should improve stability at very high rpm. These are quicker off the seat than the RX profiles, but the IXL nose shape will provide better stability with high ratios. LOBE NUMBER
RATED DURATION
2539 2540 2541 2542 2543 2544
295 297 299 301 303 305
CAMSHAFT TYPE IXL Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 265 267 269 271 273 275
@ .200 182 184 186 188 190 192
LOBE LIFT .420 .422 .424 .426 .428 .430
TAPPET LIFT @ TDC 106° .140 .144 .148 .152 .156 .160
110° .125 .128 .132 .136 .140 .144
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .714 .717 .721 .724 .728 .731
1.8 .756 .760 .763 .767 .770 .774
1.9 .798 .802 .806 .809 .813 .817
UB SERIES ROLLERS The UB Series Rollers are based on some of our most popular high rpm, NASCAR style .875 flat tappet designs but are optimized to take advantage of the additional tappet velocity allowed with roller lifters. These are quicker off the seat than the HXL series but have slightly less high lift area. Performance will be similar to the HXL, but certain port designs and valve train systems will have a clear preference. LOBE NUMBER
RATED DURATION
2214 2215 2246 2247 2238 2239 2240 2241 2242 2243 2244 2245
287 289 291 293 295 297 299 301 303 305 307 309
2265 2267 2273 2274 2275 2276 2277 2278 2279 2280 2281
285 287 289 291 293 295 297 299 301 303 305
CAMSHAFT TYPE
UB Series Rated Duration @ .020" Tappet Lift
CAMSHAFT TYPE
UB Series Rated Duration @ .020" Tappet Lift
468
DURATION IN DEGREES @ .050 257 259 261 263 265 267 269 271 273 275 277 279 @ .050 255 257 259 261 263 265 267 269 271 273 275
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@ .200 179 181 183 185 186 188 190 192 194 196 198 200 @ .200 176 178 179 181 183 185 187 189 191 193 195
LOBE LIFT .446 .447 .448 .449 .450 .451 .452 .453 .454 .455 .456 .457 .423 .424 .425 .426 .427 .428 .430 .432 .434 .436 .438
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
106° .126 .130 .135 .139 .143 .147 .152 .156 .160 .164 .168 .172 106° .122 .126 .130 .134 .138 .142 .146 .150 .155 .159 .163
1.6 .714 .715 .717 .718 .720 .722 .723 .725 .726 .728 .730 .731 1.7 .719 .721 .723 .724 .726 .728 .731 .734 .738 .741 .745
110° .110 .114 .118 .122 .128 .130 .135 .139 .143 .147 .151 .155 110° .106 .110 .114 .118 .122 .126 .130 .134 .138 .142 .146
1.7 .758 .760 .762 .763 .765 .767 .768 .770 .772 .774 .775 .777 1.8 .761 .763 .765 .767 .769 .770 .774 .778 .781 .785 .788
1.8 .803 .805 .806 .808 .810 .812 .814 .815 .817 .819 .821 .823 1.9 .804 .806 .808 .809 .811 .813 .817 .821 .825 .828 .832
SOLID ROLLER SOLID ROLLER
UBL SERIES ROLLERS The UBL series is based on the UB design, but is faster off the seat for improved performance in limited engine speed and lower lobe lift applications. LOBE NUMBER
RATED DURATION
2195 2196 2198 2199
283 287 295 299
CAMSHAFT TYPE UBL Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 254 258 266 270
@ .200 174 179 185 189
LOBE LIFT .410 .410 .410 .410
TAPPET LIFT @ TDC 106° .120 .128 .144 .152
110° .105 .113 .128 .136
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .656 .656 .656 .656
1.7 .697 .697 .697 .697
1.8 .738 .738 .738 .738
UBLL SERIES ROLLERS The UBL series is based on the UB design but is faster off the seat for improved performance in limited engine speed and lower lobe lift applications. LOBE NUMBER
RATED DURATION
2201 2202 2203
289 291 293
CAMSHAFT TYPE UBLL Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 260 262 264
@ .200 177 179 181
LOBE LIFT .389 .390 .391
TAPPET LIFT @ TDC 106° .131 .135 .139
110° .116 .119 .123
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.9 .739 .741 .743
2.0 .778 .780 .782
2.1 .817 .819 .821
UBA SERIES ROLLERS The UBA series is based on the UB design but is faster off the seat for improved performance in limited engine speed applications. LOBE NUMBER
RATED DURATION
2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258
285 287 289 291 293 295 297 299 301 303 305
CAMSHAFT TYPE
UBA Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 256 258 260 262 264 266 268 270 272 274 276
@ .200 179 181 183 185 187 189 191 193 195 197 199
LOBE LIFT .444 .446 .448 .450 .452 .454 .456 .458 .460 .462 .464
TAPPET LIFT @ TDC 106° .126 .131 .135 .139 .144 .148 .153 .157 .161 .166 .170
110° .110 .114 .118 .122 .126 .131 .135 .139 .144 .148 .152
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .710 .714 .717 .720 .723 .726 .730 .733 .736 .739 .742
1.7 .755 .758 .762 .765 .768 .772 .775 .779 .782 .785 .789
1.8 .799 .803 .806 .810 .814 .817 .821 .824 .828 .832 .835
DSP SERIES ROLLERS The DSP fits nicely in between the UBA and DSS families. These profiles work great either in lower ratio, high rpm applications or in lower engine speed applications where you can use a faster lobe. LOBE NUMBER
RATED DURATION
12172 12174 12176 12178 12180
283 287 291 295 299
CAMSHAFT TYPE DSP Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 254 258 262 266 270
@ .200 179 183 187 191 195
LOBE LIFT .465 .467 .469 .471 .473
TAPPET LIFT @ TDC 106° .124 .133 .142 .151 .160
110° .107 .115 .124 .133 .142
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .744 .747 .750 .754 .757
1.7 .791 .794 .797 .801 .804
1.800.999.0853
1.8 .837 .841 .844 .848 .851
469
SOLID ROLLER
SOLID ROLLER DSS SERIES ROLLERS The DSS rollers are based off the best aspects of the HXL and DR series. These work very well in high torque applications that can take advantage of an aggressive high lobe lift design. The DSS series is a very good choice for applications where valve motion similar to that of an aggressive high ratio lobe is desired without going with an extreme rocker ratio. Available for 1.948" and larger journal sizes but cannot be ground on standard journal Small Block Chevy or small base circle cores. LOBE NUMBER
RATED DURATION
2551 2555 2557 2559 2560 2521 2522 2523 2524 2525 2526 2527 2528 2529
288 299 292 294 296 298 300 302 304 306 308 310 312 314
CAMSHAFT TYPE
DSS Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 260 262 264 266 268 270 272 274 276 278 280 282 284 286
@ .200 187 189 191 192 194 196 198 200 202 204 206 208 210 212
LOBE LIFT .476 .477 .478 .479 .480 .481 .482 .483 .484 .485 .486 .487 .488 .489
TAPPET LIFT @ TDC 106° .139 .143 .148 .153 .157 .162 .166 .171 .176 .180 .185 .189 .194 .199
110° .121 .125 .130 .134 .139 .143 .148 .152 .157 .161 .166 .170 .175 .180
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .714 .716 .717 .719 .720 .722 .723 .725 .726 .728 .729 .731 .732 .734
1.6 .762 .763 .765 .766 .768 .770 .771 .773 .774 .776 .778 .779 .781 .782
1.7 .809 .811 .813 .814 .816 .818 .819 .821 .823 .825 .826 .828 .830 .831
HIGH RPM INTAKE ROLLERS The High RPM Intake Rollers are used on highly modified, high rpm drag race motors. They are used primarily with ported heads that incorporate light weight valves and high spring loads. LOBE NUMBER
RATED DURATION
1301 1309 1302 1030 1046 4107 4068 4085 4091 4063 1490 4118
318-6 324-7 324-6 324-30 326-30 328-6 328-5 328-11 330-10 332-7 332-6 336-4
CAMSHAFT TYPE
High RPM Intake Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 278 284 284 288 293 288 288 288 287 292 292 296
@ .200 195 198 200 207 211 201 203 203 203 204 206 209
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
.465 .456 .471 .510 .510 .456 .476 .483 .480 .456 .476 .476
106° .161 .171 .172 .188 .198 .177 .180 .179 .180 .184 .188 .195
1.5 .698 .684 .706 .765 .765 .684 .714 .724 .720 .684 .714 .714
110° .144 .154 .155 .171 .180 .161 .163 .162 .163 .167 .171 .178
1.6 .744 .730 .753 .816 .816 .730 .761 .773 .768 .730 .761 .761
1.7 .791 .775 .800 .867 .867 .775 .810 .821 .816 .775 .810 .810
REV DRAG RACE INTAKE ROLLERS The REV Drag Race Rollers use some of the latest ramp designs to provide excellent torque, power and high speed stability for high rpm competition drag race applications. When coupled with high rocker ratios, these profiles provide more area than comparable standard ratio designs. LOBE NUMBER
RATED DURATION
1770 1771 1839 1840 1842 1844 1846
301 303 305 307 311 315 319
CAMSHAFT TYPE
REV Drag Race Int. Rated Duration @ .020" Tappet Lift
470
DURATION IN DEGREES @ .050 268 270 272 274 278 282 286
@ .200 188 190 192 194 198 201 205
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LOBE LIFT .460 .460 .460 .460 .460 .460 .460
TAPPET LIFT @ TDC 106° .147 .152 .156 .160 .169 .177 .186
110° .130 .135 .139 .143 .151 .160 .168
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .736 .736 .736 .736 .736 .736 .736
1.7 .782 .782 .782 .782 .782 .782 .782
1.8 .828 .828 .828 .828 .828 .828 .828
SOLID ROLLER
The TS PRO Series is our most aggressive Pro Stock series to date, with faster ramps than the DR Drag Series. These designs get from .020" to .050" tappet lift and back in only 30°, resulting in the quickest drag race rollers COMP® has released. Excellent for Pro Stock style drag racing applications. LOBE NUMBER
RATED DURATION
1372 1373 1374 1375 1376 1377
TS309 TS311 TS313 TS315 TS317 TS319
CAMSHAFT TYPE TS PRO Series Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 278 280 282 284 286 288
@ .200 202 204 206 208 210 212
LOBE LIFT .535 .537 .539 .541 .543 .545
TAPPET LIFT @ TDC 106° .176 .181 .186 .191 .196 .201
110° .157 .162 .167 .172 .176 .181
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .910 .913 .916 .920 .923 .927
1.8 .963 .967 .970 .974 .977 .981
1.9 1.017 1.020 1.024 1.028 1.032 1.036
SOLID ROLLER
TS PRO SERIES ROLLERS
RX DRAG RACE INTAKE ROLLERS The RX Drag Race Rollers are similar to the REV designs, except they have more lift and use sections of our popular RX ramp. These designs have proven to provide an outstanding combination of high rpm power and stability while not sacrificing torque. Excellent in applications from high end bracket engines to Comp Eliminator and Pro Stock. LOBE NUMBER
RATED DURATION
RX Drag Race .470" Lobe Lift Rated Duration @ .020" Tappet Lift
1806 1808 1810 1812 1814 1816 1817 1718 1820
294 298 302 306 310 314 316 318 322
@ .050 261 265 269 273 277 281 283 285 289
@ .200 181 185 189 193 196 200 202 204 208
.470 .470 .470 .470 .470 .470 .470 .470 .470
106° .131 .139 .148 .156 .165 .174 .178 .183 .191
110° .114 .122 .131 .139 .147 .156 .160 .165 .173
1.6 .752 .752 .752 .752 .752 .752 .752 .752 .752
1.7 .799 .799 .799 .799 .799 .799 .799 .799 .799
1.8 .846 .846 .846 .846 .846 .846 .846 .846 .846
RX Drag Race .484" Lobe Lift Rated Duration @ .020" Tappet Lift
1826 1828 1829 1719 1832
310 314 316 318 322
277 281 283 285 289
197 201 203 204 208
.484 .484 .484 .484 .484
.165 .174 .179 .183 .191
.148 .156 .161 .165 .174
.774 .774 .774 .774 .774
.823 .823 .823 .823 .823
.871 .871 .871 .871 .871
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
DR PRO DRAG RACE INTAKE ROLLERS The DR Pro Drag lobes are more aggressive than the RX Pro Drag lobes. They are use in professional class drag racing or similar applications and are not recommended for use above 10,000 rpm. These use our latest design techniques to provide excellent area and improved dynamics over similar profiles. LOBE NUMBER
RATED DURATION
1912 1914 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934
301 305 307 309 311 313 315 317 319 321 323 325 327
CAMSHAFT TYPE
DR Pro Drag Race Int. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 270 274 276 278 280 282 284 286 288 290 292 294 296
@ .200 193 197 199 201 203 205 207 209 211 213 215 217 219
LOBE LIFT .507 .509 .520 .521 .521 .522 .523 .524 .525 .526 .527 .528 .529
TAPPET LIFT @ TDC 106° .155 .164 .169 .173 .178 .183 .188 .193 .198 .202 .207 .212 .217
110° .137 .146 .150 .155 .159 .164 .169 .173 .178 .183 .188 .192 .197
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .862 .865 .884 .886 .886 .887 .889 .891 .893 .894 .896 .898 .899
1.8 .913 .916 .936 .938 .938 .940 .941 .943 .945 .947 .949 .950 .952
1.800.999.0853
1.9 .963 .967 .988 .990 .990 .992 .994 .996 .998 .999 1.001 1.003 1.005
471
SOLID ROLLER
SOLID ROLLER RX PRO DRAG RACE INTAKE ROLLERS These use the same ramps as the RX Drag Race .484" lobes but have more lift for all out applications. LOBE RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE LIFT NUMBER DURATION DEGREES LIFT @ TDC @ “0” LASH ROCKER ARM RATIO CAMSHAFT TYPE RX Pro Drag Race Int. Rated Duration @ .020" Tappet Lift
1722 1724 1726 1727 1728 1729
308 310 312 314 316 318
@ .050 275 277 279 281 283 285
@ .200 195 197 199 201 203 205
.488 .491 .492 .493 .496 .497
106° .161 .165 .170 .175 .180 .184
110° .143 .148 .152 .156 .160 .165
1.6 .781 .786 .787 .789 .794 .795
1.7 .830 .835 .836 .838 .843 .845
1.8 .878 .884 .886 .887 .893 .895
RX Pro Drag Race Int. .515" Lobe Lift Rated Duration @ .020" Tappet Lift
1742 1743 1744 1736 1745 1737 1746 1747 1748 1749
310 312 314 316 318 320 322 326 330 334
277 279 281 283 285 287 289 293 297 301
197 199 201 203 205 207 209 213 217 220
.515 .515 .515 .515 .515 .515 .515 .515 .515 .515
.166 .170 .175 .180 .184 .189 .193 .202 .211 .220
.148 .152 .157 .161 .166 .170 .175 .184 .192 .201
.824 .824 .824 .824 .824 .824 .824 .824 .824 .824
.876 .876 .876 .876 .876 .876 .876 .876 .876 .876
.927 .927 .927 .927 .927 .927 .927 .927 .927 .927
CE DRAG RACE INTAKE ROLLERS The CE Drag Race Intake Profiles are intended for very large port, high flow cylinder head applications. They work well in the high rpm range where Comp Eliminator and similar high rpm small displacement engines operate. LOBE NUMBER
RATED DURATION
1286 1288 1295 1260 1278 1268 1271 1272
310 314 316 318 318 320 320 322
CAMSHAFT TYPE
CE Drag Race Int. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 274 278 280 282 282 284 284 286
@ .200 189 192 194 194 196 196 198 198
LOBE LIFT .484 .484 .484 .474 .484 .476 .484 .478
TAPPET LIFT @ TDC 106° .154 .162 .166 .160 .170 .165 .174 .169
110° .138 .146 .150 .144 .153 .148 .157 .152
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .774 .774 .774 .758 .774 .762 .774 .765
1.7 .823 .823 .823 .806 .823 .809 .823 .813
1.8 .871 .871 .871 .853 .871 .857 .871 .860
DASH 31 ROLLERS The Dash 31 Rollers are a more aggressive cousin of the original -30 lobes popular in Pro Stock in the early 90s. These have been used successfully in Pro Stock but are preferred for use in applications operating below 9000 rpm. These profiles result in excellent torque and make very good power up to the limiting speed of the valve train. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE Dash 31 Rated Duration @ .020" Tappet Lift
472
1186 1188 1176 1180
306-31 308-31 310-31 312-31
DURATION IN DEGREES @ .050 275 277 279 281
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@ .200 198 200 202 204
LOBE LIFT .520 .520 .520 .520
TAPPET LIFT @ TDC 106° .166 .171 .176 .181
110° .147 .152 .157 .162
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .832 .832 .832 .832
1.7 .884 .884 .884 .884
1.8 .936 .936 .936 .936
SOLID ROLLER
These are assorted intake profiles that have been developed for large cubic inch, blown, and/or nitrous applications that respond favorably to more area and are not required to run over 9000 rpm. These have been used with high rocker ratios to result in over 1.000" valve lift in lower rpm applications. LOBE NUMBER
RATED DURATION
1027 1028 1240
322 326 324
CAMSHAFT TYPE Mountain Motor Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 292 296 294
@ .200 214 218 214
LOBE LIFT .517 .525 .520
TAPPET LIFT @ TDC 106° .206 .216 .201
110° .187 .197 .182
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 .879 .893 .884
1.8 .931 .945 .936
1.9 .982 .998 .988
HIGH RPM EXHAUST ROLLERS
SOLID ROLLER
MOUNTAIN MOTOR ROLLERS
These lobes are used on the exhaust side of highly modified, high rpm race engines. The cylinder head efficiency directly determines the design used. LOBE NUMBER
RATED DURATION
4050 4067 4074 1495 4055 1484 1320 1485 4247 1487 1306 1489 4051 4064 1494 4052 4053 1152 4056 4057
319-1 322-3 326-4 328-2 330-1 330-5 332-2 334-3 336-5 338-2 340-3 342-2 342-3 344-3 344-4 344-5 348-1 352-1 356-5 360-5
CAMSHAFT TYPE
High RPM Exh. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 280 284 288 291 292 292 292 296 296 300 300 302 302 304 304 304 308 312 316 320
@ .200 185 190 194 222 196 196 203 200 205 204 208 207 210 214 211 214 217 222 227 230
LOBE LIFT .400 .420 .420 .427 .420 .420 .440 .420 .440 .420 .440 .420 .460 .470 .440 .460 .460 .477 .480 .480
TAPPET LIFT @ TDC 106° .152 .160 .166 .181 .168 .173 .182 .179 .188 .185 .193 .192 .198 .207 .201 .207 .212 .222 .231 .238
110° .137 .145 .151 .165 .152 .158 .166 .165 .172 .171 .177 .177 .182 .190 .185 .190 .195 .205 .214 .221
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .600 .630 .630 .640 .630 .630 .660 .630 .660 .630 .660 .630 .690 .705 .660 .690 .690 .715 .720 .720
1.6 .640 .672 .672 .683 .672 .672 .704 .672 .704 .672 .704 .672 .736 .752 .704 .736 .736 .765 .768 .768
1.7 .680 .714 .714 .725 .714 .714 .748 .714 .748 .714 .748 .714 .782 .799 .748 .782 .782 .810 .816 .816
JX DRAG RACE EXHAUST ROLLERS The JX Drag Race Exhaust profiles are good complements to either the CE, REV or RX intake designs. They are intended for very large port, high flow cylinder head applications and work well in the high rpm range where Comp Eliminator and similar high rpm small displacement engines operate. LOBE NUMBER
RATED DURATION
1285 1261 1287 1291 1263 1289 1269 1293 1273
333 335 335 337 339 339 341 341 343
CAMSHAFT TYPE
JX Drag Race Exh. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 292 294 294 296 298 298 300 300 302
@ .200 196 198 198 200 201 202 203 203 205
LOBE LIFT .460 .446 .460 .460 .446 .460 .448 .460 .450
TAPPET LIFT @ TDC 106° .167 .171 .171 .175 .179 .179 .183 .183 .187
110° .152 .156 .156 .160 .163 .163 .167 .167 .171
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .736 .714 .736 .736 .714 .736 .717 .736 .720
1.7 .782 .758 .782 .782 .758 .782 .762 .782 .765
1.800.999.0853
1.8 .828 .803 .828 .828 .803 .828 .806 .828 .810
473
SOLID ROLLER
SOLID ROLLER XCX DRAG RACE EXHAUST ROLLERS The XCX rollers provide state-of-the-art ramp designs with the ramp characteristics required to decrease pumping losses and allow exhaust gasses from overlap to provide signal to accelerate the intake charge into the cylinder in large port, drag race applications. These modern designs are very stable and respond well to rocker ratio increases. LOBE NUMBER
RATED DURATION
XCX Drag Race Exh. Rated Duration @ .020" Tappet Lift
1850 1960 1860 1962 1862 1964 1864 1966 1866 1968 1868
320 324 326 328 330 332 334 336 338 340 342
@ .050 282 286 288 290 292 294 296 298 300 302 304
@ .200 194 198 200 202 204 206 208 210 212 214 216
.460 .450 .470 .450 .470 .450 .470 .450 .470 .450 .470
106° .162 .170 .175 .179 .183 .187 .192 .195 .200 .203 .209
110° .146 .154 .158 .162 .166 .170 .175 .178 .183 .186 .191
1.6 .736 .720 .752 .720 .752 .720 .752 .720 .752 .720 .752
1.7 .782 .765 .799 .765 .799 .765 .799 .765 .799 .765 .799
1.8 .828 .810 .846 .810 .846 .810 .846 .810 .846 .810 .846
XCX Pro Drag Race Exh. Rated Duration @ .020" Tappet Lift
1871 1872 1873 1874 1875 1876 1877 1878 1879
330 332 334 336 338 340 342 344 346
292 294 296 298 300 302 304 306 308
205 207 209 211 213 215 217 219 221
.500 .502 .504 .506 .508 .510 .512 .514 .516
.184 .188 .193 .197 .202 .206 .211 .215 .220
.167 .171 .175 .180 .184 .188 .193 .197 .202
.800 .803 .806 .810 .813 .816 .819 .822 .826
.850 .853 .857 .860 .864 .867 .870 .874 .877
.900 .904 .907 .911 .914 .918 .922 .925 .929
CAMSHAFT TYPE
DURATION IN DEGREES
LOBE LIFT
TAPPET LIFT @ TDC
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO
XJX DRAG RACE EXHAUST ROLLERS The XJX Drag Race lobes are like the XCX but with higher acceleration rates, more lift and more area under the curve. The assymetrical design with higher opening acceleration helps move more exhaust gas at bottom dead center, reducing losses as the piston comes up, driving the remaining exhaust from the cylinder. These profiles are designed for very stiff valve train systems with 60mm journals and larger, .850" diameter roller lifter wheels. LOBE NUMBER
RATED DURATION
1680 1681 1682 1683 1684 1685 1686
334 336 338 340 342 344 346
CAMSHAFT TYPE
XJX Pro Drag Race Exh. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 296 298 300 302 304 306 308
@ .200 214 216 218 220 222 224 226
LOBE LIFT .538 .540 .542 .544 .546 .548 .550
TAPPET LIFT @ TDC 106° .204 .209 .214 .219 .224 .229 .234
110° .184 .189 .194 .199 .204 .209 .214
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .861 .864 .867 .870 .874 .877 .880
1.7 .915 .918 .921 .925 .928 .932 .935
1.8 .968 .972 .976 .979 .983 .986 .990
PRO MOD EXHAUST ROLLERS The Pro Mod Exhaust Series is very similar to the original High RPM Exhaust series but with higher lifts and larger durations. These are excellent for either Mountain Motors or Pro Mod applications where more time and more area are required to scavenge the cylinder. LOBE NUMBER
RATED DURATION
1181 1183 1185 1187 1189
352 356 360 364 368
CAMSHAFT TYPE Pro Mod Exhaust Rated Duration @ .020" Tappet Lift
474
DURATION IN DEGREES @ .050 312 316 320 324 328
@ .200 226 228 232 235 240
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LOBE LIFT .510 .510 .510 .510 .510
TAPPET LIFT @ TDC 106° .231 .235 .244 .250 .259
110° .212 .217 .226 .233 .242
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.6 .816 .816 .816 .816 .816
1.7 .867 .867 .867 .867 .867
1.8 .918 .918 .918 .918 .918
SOLID ROLLER SOLID ROLLER
DRZ PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
1975 1976 1977 1978 1979 1980
306 308 310 312 314 316
CAMSHAFT TYPE DRZ Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 275 277 279 281 283 285
@ .200 200 201 203 205 206 208
LOBE LIFT .560 .562 .564 .566 .568 .570
TAPPET LIFT @ TDC 106° .168 .172 .177 .182 .186 .191
110° .149 .154 .158 .163 .167 .172
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.008 1.012 1.015 1.019 1.022 1.026
1.9 1.064 1.068 1.072 1.075 1.079 1.083
2.0 1.120 1.124 1.128 1.132 1.136 1.140
DQS PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
1939 1943 1945
309 311 313
CAMSHAFT TYPE DQS Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 279 281 283
@ .200 204 206 208
LOBE LIFT .566 .568 .570
TAPPET LIFT @ TDC 106° .180 .185 .190
110° .160 .166 .170
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.019 1.022 1.026
1.9 1.075 1.079 1.083
2.0 1.132 1.136 1.140
DRS DRAG RACE ROLLERS The DRS Drag Race lobes are the "evil cousin" of the DR drags. These are designed for very stiff valve train systems incorporating 60mm or larger cam journals. The major intensity of these are less than 30°, and these lobes provide more area under the curve than any previous designs. LOBE NUMBER
RATED DURATION
1986 1987 1988 1989 1990 1991 1992 1993 1982
302 304 306 308 310 312 314 316 320
CAMSHAFT TYPE
DRS Drag Race Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 273 275 277 279 281 283 285 287 291
@ .200 199 201 203 205 207 209 211 213 217
LOBE LIFT .560 .563 .566 .569 .572 .575 .578 .581 .585
TAPPET LIFT @ TDC 106° .168 .173 .178 .183 .188 .193 .198 .203 .213
110° .148 .153 .158 .163 .167 .172 .177 .182 .192
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.008 1.013 1.019 1.024 1.030 1.035 1.040 1.046 1.053
1.9 1.064 1.070 1.075 1.081 1.087 1.093 1.098 1.104 1.112
2.0 1.120 1.126 1.132 1.138 1.144 1.150 1.156 1.162 1.170
DRI PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
2037 2039 2041 2042 2043 2044 2045
308 309 310 312 314 316 318
CAMSHAFT TYPE
DRI Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 279 280 281 283 285 287 289
@ .200 208 209 210 212 214 216 218
LOBE LIFT .575 .576 .577 .579 .581 .583 .585
TAPPET LIFT @ TDC 106° .190 .192 .195 .200 .205 .211 .216
110° .169 .171 .174 .179 .184 .189 .195
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.035 1.037 1.039 1.042 1.046 1.049 1.053
1.9 1.093 1.094 1.096 1.100 1.104 1.108 1.112
1.800.999.0853
2.0 1.150 1.152 1.154 1.158 1.162 1.166 1.170
475
SOLID ROLLER
SOLID ROLLER DRI PRO STOCK DRAG ROLLERS The DRI Pro Stock designs fill the gap between current Pro Stock and Mountain Motor Designs. For 60mm journals and .850" roller wheels. LOBE NUMBER
RATED DURATION
2290 2291 2292 2294 2296
306 308 310 314 316
CAMSHAFT TYPE DRI Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 277 279 281 285 289
@ .200 206 208 210 214 218
LOBE LIFT .582 .584 .586 .590 .594
TAPPET LIFT @ TDC 106° .185 .190 .195 .206 .217
110° .164 .169 .174 .184 .195
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.048 1.051 1.055 1.062 1.069
1.9 1.106 1.110 1.113 1.121 1.129
2.0 1.164 1.168 1.172 1.180 1.188
DRI HI-LIFT PRO DRAG ROLLERS The DRI Drag Race lobes are the big inch versions of the DR drags. These are designed for very stiff valve train systems incorporating 62.85mm & 65mm cam journals. The major intensity of these are less than 30°, and these lobes provide more lift. LOBE NUMBER
RATED DURATION
1568 1570 1572
310 314 318
CAMSHAFT TYPE DRI Hi-Lift Pro Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 281 285 289
@ .200 210 214 218
LOBE LIFT .632 .636 .640
TAPPET LIFT @ TDC 106° .197 .208 .220
110° .175 .186 .197
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 1.074 1.081 1.088
1.8 1.138 1.145 1.152
1.9 1.201 1.208 1.216
DRM PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
2387 2390 2391 2399 2392 2393
303 305 307 308 309 311
CAMSHAFT TYPE DRM Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 274 276 278 279 280 282
@ .200 202 204 206 207 208 210
LOBE LIFT .570 .572 .574 .575 .576 .578
TAPPET LIFT @ TDC 106° .175 .180 .185 .188 .190 .196
110° .155 .160 .165 .167 .170 .175
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.026 1.030 1.033 1.035 1.037 1.040
1.9 1.083 1.087 1.091 1.093 1.094 1.098
2.0 1.140 1.144 1.148 1.150 1.152 1.156
DRP PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
2385 2586 2587 2588 2589
309 311 313 315 317
CAMSHAFT TYPE DRP Pro Stock Drag Rated Duration @ .020" Tappet Lift
476
DURATION IN DEGREES @ .050 281 283 285 287 289
WWW.CAMHELP.COM
@ .200 210 212 214 216 218
LOBE LIFT .593 .595 .597 .599 .601
TAPPET LIFT @ TDC 106° .195 .201 .206 .212 .217
110° .174 .180 .185 .190 .196
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 1.008 1.012 1.015 1.018 1.022
1.8 1.067 1.071 1.075 1.078 1.082
1.9 1.127 1.131 1.134 1.138 1.142
SOLID ROLLER
The DRX Drag Race Exhaust lobes are a faster version of our XCX designs. They have a faster opening to increase torque and have more area under the curve. These work well with DRS intake lobes on 60mm or larger cores. LOBE NUMBER
RATED DURATION
1995 1996 1997 1998 1999
335 337 339 341 343
CAMSHAFT TYPE DRX Drag Race Exh. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 300 302 304 306 308
@ .200 215 217 219 221 223
LOBE LIFT .529 .531 .533 .535 .537
TAPPET LIFT @ TDC 106° .202 .207 .212 .216 .221
110° .185 .189 .193 .198 .202
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 .952 .956 .959 .963 .967
1.9 1.005 1.009 1.013 1.017 1.020
2.0 1.058 1.062 1.066 1.070 1.074
SOLID ROLLER
DRX DRAG RACE EXHAUST ROLLERS
XK PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
1734 1735 1723 1695 2724 2725 2726 2727 2728
334 336 337 338 340 342 344 346 348
CAMSHAFT TYPE
XK Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 297 299 300 301 303 305 307 309 311
@ .200 217 219 220 222 223 225 227 229 231
LOBE LIFT .566 .566 .566 .566 .568 .570 .572 .574 .576
TAPPET LIFT @ TDC 106° .215 .220 .222 .225 .229 .234 .239 .244 .249
110° .194 .199 .202 .204 .208 .213 .218 .223 .228
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.019 1.019 1.019 1.019 1.022 1.026 1.030 1.033 1.037
1.9 1.075 1.075 1.075 1.075 1.079 1.083 1.087 1.091 1.094
2.0 1.132 1.132 1.132 1.132 1.136 1.140 1.144 1.148 1.152
NX PRO STOCK EXHAUST ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
2577 2578 2579 2580 2581
332 334 336 338 340
CAMSHAFT TYPE NX Pro Stock Exh. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 301 303 305 307 309
@ .200 224 226 228 230 232
LOBE LIFT .562 .564 .566 .568 .570
TAPPET LIFT @ TDC 106° .230 .235 .240 .246 .251
110° .211 .215 .220 .226 .231
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.012 1.015 1.019 1.022 1.026
1.9 1.068 1.072 1.075 1.079 1.083
2.0 1.124 1.128 1.132 1.136 1.140
XKL PRO STOCK DRAG ROLLERS These profiles are High RPM Pro Stock designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
1833 1834 1775 1835 1836 1837 1847 1848 1849 1858 1859
334 336 338 340 342 344 346 348 350 352 354
CAMSHAFT TYPE
XKL Pro Stock Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 298 300 302 304 306 308 310 312 314 316 318
@ .200 220 222 224 226 228 230 232 234 236 238 240
LOBE LIFT .588 .590 .592 .594 .596 .598 .600 .602 .604 .606 .608
TAPPET LIFT @ TDC 106° .220 .226 .231 .236 .242 .247 .253 .258 .264 .269 .275
110° .200 .205 .210 .215 .220 .226 .231 .236 .242 .247 .253
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.7 1.000 1.003 1.006 1.010 1.013 1.017 1.020 1.023 1.027 1.030 1.034
1.8 1.058 1.062 1.066 1.069 1.073 1.076 1.080 1.084 1.087 1.091 1.094
1.800.999.0853
1.9 1.117 1.121 1.125 1.129 1.132 1.136 1.140 1.144 1.148 1.151 1.155
477
SOLID ROLLER
SOLID ROLLER XK .635" PRO DRAG ROLLERS The XK Drag Race Exhaust lobes are a faster version of our XCX designs. The .635" lift series is optimized for big inch applications and 62.85 or 65mm journals. LOBE NUMBER
RATED DURATION
1562 1563 1564 1565
348 352 356 360
CAMSHAFT TYPE XK .635" Pro Drag Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 311 315 319 323
@ .200 232 236 240 244
LOBE LIFT .635 .635 .635 .635
TAPPET LIFT @ TDC 106° .254 .264 .275 .286
110° .232 .242 .253 .264
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.8 1.080 1.080 1.080 1.080
1.9 1.143 1.143 1.143 1.143
2.0 1.207 1.207 1.207 1.207
UDR FUEL & ALC INTAKE ROLLERS The UDR designs take advantage of our latest design techniques for Chrysler Hemi drag racing classes. These will provide higher lift and more area than older designs while improving stability for higher rpm operation with the Hemi style valve train geometry. For 2.124"+ journals and .800"+ roller wheels. LOBE NUMBER
RATED DURATION
CAMSHAFT TYPE
UDR Fuel Int. Rated Duration @ .020" Tappet Lift
2067 2068 2073 2074 2075 2076 2077
306 310 314 318 322 326 330
DURATION IN DEGREES @ .050 273 277 281 285 289 293 297
@ .200 192 196 199 203 207 211 215
LOBE LIFT .520 .523 .526 .526 .526 .526 .526
TAPPET LIFT @ TDC 106° .154 .162 .171 .180 .189 .199 .208
110° .137 .145 .153 .162 .171 .180 .189
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.68 .874 .879 .884 .884 .884 .884 .884
1.73 .900 .905 .910 .910 .910 .910 .910
1.78 .926 .931 .936 .936 .936 .936 .936
FDR FUEL & ALC INTAKE ROLLERS The FDR designs are similar to the UDR designs but have more lift and faster ramps. These are designed around for slightly lower rpm than the UDR series but should be stable in most applications. For 2.124"+ journals and .800"+ roller wheels. LOBE NUMBER
RATED DURATION
2082 2083 2084 2085
319 323 327 331
CAMSHAFT TYPE FDR Fuel Int. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 287 291 295 299
@ .200 207 211 215 219
LOBE LIFT .536 .536 .536 .536
TAPPET LIFT @ TDC 106° .187 .197 .206 .216
110° .169 .178 .187 .197
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.68 .900 .900 .900 .900
1.73 .927 .927 .927 .927
1.78 .954 .954 .954 .954
FCX FUEL & ALC EXHAUST ROLLERS The FCX designs are based on our popular XCX exhaust designs but have limited opening acceleration to accommodate the increased cylinder pressures seen at exhaust opening in these applications. These will work on the intake side but are optimized for the exhaust. For 2.124"+ journals and .800"+ roller wheels. LOBE NUMBER
RATED DURATION
2171 2169 2162 2163 2164 2165 2166 2167
316 320 324 328 332 336 340 344
CAMSHAFT TYPE
FCX Fuel Exh. Rated Duration @ .020" Tappet Lift
478
DURATION IN DEGREES @ .050 277 281 285 289 293 297 301 305
@ .200 191 195 199 203 207 211 215 219
WWW.COMPCAMS.COM
LOBE LIFT .512 .512 .512 .512 .512 .512 .512 .512
TAPPET LIFT @ TDC 106° .154 .163 .171 .180 .189 .198 .206 .215
110° .138 .146 .154 .162 .171 .180 .188 .197
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.68 .860 .860 .860 .860 .860 .860 .860 .860
1.73 .886 .886 .886 .886 .886 .886 .886 .886
1.78 .911 .911 .911 .911 .911 .911 .911 .911
SOLID ROLLER SOLID ROLLER
EF FUEL & ALC INTAKE ROLLERS These profiles are top fuel designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
2096 2097 2098 2099
329 329 335 335
CAMSHAFT TYPE EF Fuel Int. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 295 295 301 301
@ .200 211 212 217 218
LOBE LIFT .475 .500 .475 .500
TAPPET LIFT @ TDC 106° .198 .200 .210 .213
110° .180 .182 .193 .195
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.68 .798 .840 .798 .840
1.73 .822 .865 .822 .865
1.78 .846 .890 .846 .890
FLI FUEL INTAKE ROLLERS These profiles are top fuel designs for use in modern professional drag race classes. LOBE NUMBER
RATED DURATION
2114 2115 2116
329 333 337
CAMSHAFT TYPE FLI Fuel Int. Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 296 300 304
@ .200 214 218 221
LOBE LIFT .513 .515 .517
TAPPET LIFT @ TDC 106° .203 .212 .221
110° .185 .194 .202
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.68 .862 .865 .869
1.73 .887 .891 .894
1.78 .913 .917 .920
FLX FUEL EXHAUST ROLLERS The FDR designs are similar to the UDR designs but have more lift and faster ramps. These are designed around for slightly lower rpm than the UDR series but should be stable in most applications. For 2.124"+ journals and .800"+ roller wheels. LOBE NUMBER
RATED DURATION
2138 2139 2140
333 337 341
CAMSHAFT TYPE FDR Rollers Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 298 302 306
@ .200 213 217 221
LOBE LIFT .510 .512 .514
TAPPET LIFT @ TDC 106° .203 .212 .221
110° .186 .195 .203
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.68 .857 .860 .864
1.73 .882 .886 .889
1.78 .908 .911 .915
CHRYSLER SPECIAL RACE ROLLER These designs are for Chryslers only. The “Special Roller” offers a variety of lobes used primarily on 383-426W-426 Hemis and 440 motors in Super Street, Super Stock, Pro Stock, and Alcohol burning Hemis. LOBE NUMBER
RATED DURATION
1661 1625 1634 4248 4083 1642 1635 1491 1649 1650 1662
314-1 320-8 327-2 324-8 333-1 330-9 327-3 331-3 335-4 336-3 342-4
CAMSHAFT TYPE
Chrysler Specials Rated Duration @ .020" Tappet Lift
DURATION IN DEGREES @ .050 274 282 286 286 292 292 290 294 294 298 304
@ .200 190 202 198 204 202 208 206 208 212 214 217
LOBE LIFT .480 .500 .500 .500 .500 .500 .485 .485 .485 .500 .500
TAPPET LIFT @ TDC 106° .148 .179 .175 .186 .174 .193 .186 .191 .199 .204 .214
110° .132 .161 .159 .167 .168 .176 .169 .174 .183 .186 .197
THEORETICAL VALVE LIFT @ “0” LASH ROCKER ARM RATIO 1.5 .720 .750 .750 .750 .750 .750 .728 .728 .728 .750 .750
1.6 .768 .800 .800 .800 .800 .800 .776 .776 .776 .800 .800
1.800.999.0853
1.7 .816 .850 .850 .850 .850 .850 .825 .825 .825 .850 .850
479
OVERHEAD CAM (PIVOTING FOLLOWER)
OVERHEAD CAM (PIVOTING FOLLOWER) oVErHEaD Cam ForD moDuLar XTrEmE ENErgy™ 4.6 & 5.4L − SOHC or DOHC These profiles are developed for use in Ford Modular engines . The .550" versions are more aggressive off the seat and have more area . The .500" lift versions will work in 1998 and earlier SOHC engines without cylinder head modifications . They also work very well in DOHC applications that have been modified to accept .500" valve lift . The .425" versions are best suited DOHC applications with 1999 or later PI cylinder heads and can be used with stock valve train . Valve durations and lift given for stock valve, lifter and rocker geometry . DESIGN NUMBER
RATED DURATION AT VALVE
9240 9241 9242 9243 9244 9245 9320 9321 9322 9323 9324 9325 9341 9342 9343 9344 9345 9346 9254 9256 9257 9258 9259 9260 9266 9267 9268 9269 9270 9271 9272 9273
254 258 262 266 270 274 256 260 264 268 272 276 258 262 266 270 274 278 254 262 268 270 274 278 262 266 270 274 278 282 286 290
CAMSHAFT TYPE
XE Ford 4 .6/5 .4L Rated Duration @ .006" Valve Lift Valve Lift Given w/ Stock Geometry
DURATION IN DEGREES AT VALVE @ .050 218 222 226 230 234 238 220 224 228 232 236 240 222 226 230 234 238 242 216 224 230 232 236 240 226 230 234 238 242 246 250 254
LOBE LIFT
VALVE LIFT
.236 .236 .236 .236 .236 .236 .250 .250 .250 .250 .250 .250 .263 .263 .263 .263 .263 .263 .274 .274 .274 .274 .274 .274 .300 .300 .300 .300 .300 .300 .300 .300
.425 .425 .425 .425 .425 .425 .450 .450 .450 .450 .450 .450 .475 .475 .475 .475 .475 .475 .500 .500 .500 .500 .500 .500 .550 .550 .550 .550 .550 .550 .550 .550
@ .200 164 171 177 179 182 186 165 168 172 176 179 183 169 172 176 180 183 186 164 171 177 179 182 186 177 181 185 189 192 196 199 203
CamQuest™ 6 Cam Selection Software The revolutionary CamQuest™ 6 Cam Selection Software is now available completely FRee . Simply download your copy from the COMP Cams® website, and you’ll be selecting camshaft and valve train combinations in minutes .
Download your copy FRee @ www.compcams.com/camquest.
480
WWW.CAMHELP.COM
See Page 396
Overhead Cam (Pivoting Follower)
These profiles are developed for use in 3V Ford Modular engines. Note that the effective rocker ratio is much higher in this application than in the 2V or 4V. The base circles are also smaller, hence the other profiles are not recommended in 3V applications. Also, these 3V intake profiles are quicker than the exhaust due to the much lighter valves. DESIGN NUMBER
RATED DURATION AT VALVE
VALVE LIFT
LOBE LIFT
XE 3V Mod. Int. Rated Duration @ .006" Valve Lift
9234 9236 9237 9238 9239
253 261 265 269 273
@ .050 214 222 226 230 234
@ .200 161 169 173 177 181
.480 .490 .500 .510 .520
.236 .241 .246 .251 .255
2.0 .472 .482 .492 .502 .510
2.05 .484 .494 .504 .515 .523
2.1 .496 .506 .517 .527 .536
XE 3V Mod. Exh. Rated Duration @ .006" Valve Lift
9246 9247 9248 9251 9252
270 274 278 282 286
227 231 235 239 243
169 173 177 181 185
.470 .475 .480 .485 .490
.234 .235 .237 .240 .243
.468 .470 .474 .480 .486
.480 .482 .486 .492 .498
.491 .494 .498 .504 .510
XE 3V LL Mod. Int. Rated Duration @ .006" Valve Lift
19202 19203 19204 19205 19207 19209
253 257 261 265 273 281
214 218 222 226 234 242
160 163 167 171 179 186
.450 .450 .450 .450 .450 .450
.222 .222 .222 .222 .222 .222
.444 .444 .444 .444 .444 .444
.455 .455 .455 .455 .455 .455
.466 .466 .466 .466 .466 .466
XE 3V LL Mod. Exh. Rated Duration @ .006" Valve Lift
19213 19214 19215 19216 19221
270 274 278 282 298
227 231 235 239 246
169 173 176 180 186
.450 .450 .450 .450 .450
.223 .223 .223 .223 .223
.446 .446 .446 .446 .446
.457 .457 .457 .457 .457
.468 .468 .468 .468 .468
Rated Duration @ .006" Valve Lift Faster Int. XE 3V TVK Int. Rated Duration @ .006" Valve Lift
19223 19225 19194 19240 19242 19244 19246
306 314 264 256 264 272 280
254 262 228 221 229 237 245
193 201 176 171 179 187 195
.450 .450 .500 .523 .535 .547 .559
.223 .223 .246 .256 .262 .267 .273
.446 .446 .492 .512 .524 .534 .546
.457 .457 .504 .525 .537 .547 .560
.468 .468 .517 .538 .550 .561 .573
XE 3V TVK Exh. Rated Duration @ .006" Valve Lift
19251 19253 19254 19255 19256 19258
267 275 279 283 287 295
228 236 240 244 248 256
176 184 188 192 195 203
.538 .550 .555 .560 .560 .560
.265 .271 .273 .275 .275 .275
.530 .542 .546 .550 .550 .550
.543 .556 .560 .564 .564 .564
.557 .569 .573 .578 .578 .578
CAMSHAFT TYPE
DURATION IN DEGREES AT VALVE
THEORETICAL VALVE LIFT @ "0" LASH ROCKER ARM RATIO
1.800.999.0853
Overhead Cam (Pivoting Follower)
FORD MODULAR XTREME ENERGY™ 4.6 & 5.4L − 3V
481
OVERHEAD CAM (PIVOTING FOLLOWER)
OVERHEAD CAM (PIVOTING FOLLOWER) ForD 2000-2300 oHC STrEET These profiles are designed for use in Ford 2000-2300 OHC (Pinto) applications with factory style sliding followers . Cams must be nitrided after ground and will require extra time . Valve durations and lift given for stock valve, lifter and rocker geometry . DESIGN NUMBER CAMSHAFT TYPE
VALVE DURATION
LOBE LIFT
VALVE LIFT
Street Profiles Hydraulic Lifter Valve Lift Given w/ Stock Geometry
8022 8023 8024 8025 8026
@ .010" 240 252 260 268 280
@ .050" 200 210 218 226 236
.240 .246 .252 .264 .277
.400 .406 .420 .440 .460
Street Profiles Solid Lifter .010" Lash
8006 8007 8008
272 294 300
242 264 278
.282 .292 .350
.445 .463 .580
ForD 2000-23000 oHC raCE These profiles are designed for use in Ford 2000-2300 OHC (Pinto) applications with factory style sliding followers . Cams must be nitrided after ground and will require extra time . Valve durations and lift given for stock valve, lifter and rocker geometry . DESIGN NUMBER CAMSHAFT TYPE
VALVE DURATION
LOBE LIFT
VALVE LIFT
Race Profiles Base Designs Solid Lifter .010" Lash Valve Lift Given w/ Stock Geometry
8064 8066 8098 8096 8090
@ .010" 270 280 280 288 300
@ .050" 238 248 248 256 268
.280 .300 .270 .300 .345
.460 .500 .460 .500 .575
Race Profiles .480" Lift Rule Solid Lifter .010" Lash
8312 8314 8316
288 292 296
260 264 268
.284 .284 .284
.480 .480 .480
Race Profiles Base Designs Solid Lifter .010" Lash
8304 8306 8325 8327
294 300 314 320
272 278 282 288
.297 .297 .297 .297
.516 .516 .516 .516
Keep up with the hottest new trends and innovative products by checking out the online videos @ www.cpgnationtv.com. Browse and watch hundreds of technical videos, installs, new product reviews, dyno tests and company tours from automotive aftermarket manufacturers .
482
WWW.COMPCAMS.COM
Overhead Cam (Pivoting Follower)
These profiles are designed for use in Ford 2000-2300 OHC (Pinto) applications with roller followers. DESIGN NUMBER CAMSHAFT TYPE
Int./Exh. 8374/8375 8376/8377 8380/8381 8382/8383 8384/8385 8386/8387 Int. 8360 8362 8364 8366
Race Profiles High-Tech™ Designs Roller Lifter .010" Lash CAMSHAFT TYPE Race Profiles RT Style Designs Roller Lifter .010" Lash
VALVE DURATION @ .010" 279 283 291 295 299 303 @ .010" 286 290 294 298
@ .050" 246 250 258 262 266 270 @ .050" 258 262 266 270
LOBE LIFT
VALVE LIFT
.344 .344 .344 .344 .344 .344
.620 .620 .620 .620 .620 .620
.355 .360 .363 .363
.645 .655 .660 .660
GM ECOTECH - XTREME ENERGY™ HYDRAULIC ROLLER OHC These profiles are designed for use in GM Ecotech applications. Valve durations and lift given for stock valve, lifter and rocker geometry. DESIGN NUMBER
RATED DURATION AT VALVE
Street Hydraulic Int. Rated Duration @ .006" Valve Lift
8754 8756 8758 8760 8762
@ .006" 240 246 252 258 264
@ .050" 198 204 210 216 222
Street Hydraulic Exh. Rated Duration @ .006" Valve Lift
8755 8757 8759 8761 8763
244 250 256 262 268
Race Designs Int. Rated Duration @ .006" Valve Lift
8766 8770 8780
Race Designs Exh. Rated Duration @ .006" Valve Lift
8767 8771 8781
CAMSHAFT TYPE
DURATION IN DEGREES AT VALVE
LOBE LIFT
VALVE LIFT
@ .200" 141 146 151 157 164
.251 .251 .251 .260 .270
.423 .423 .423 .440 .456
200 206 212 218 224
140 145 150 156 163
.248 .248 .248 .258 .268
.419 .419 .419 .436 .453
292 303 310
247 259 267
186 198 207
.294 .300 .350
.499 .511 .591
294 306 314
249 261 268
187 199 208
.294 .300 .350
.499 .512 .591
Overhead Cam (Pivoting Follower)
FORD 2000-2300 OHC RACE ROLLER FOLLOWER
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1.800.999.0853
483
Overhead Cam (Pivoting Follower)
Overhead Cam (Pivoting Follower) MITSUBISHI 4G63 - XTREME ENERGY™ HYDRAULIC ROLLER OHC These profiles are designed for use in Mitsubishi 4G63 applications. Valve durations and lift given for stock valve, lifter and rocker geometry. DESIGN NUMBER CAMSHAFT TYPE
Mitsubishi 4G63 Street Hydraulic Rated Duration @ .004" Valve Lift
8735 8736 8737 8738 8739 8740 8741 8742 8745 8746
VALVE DURATION @ .004" 251 250 259 258 259 258 266 266 256 257
@ .050" 204 204 212 212 212 212 220 220 210 210
LOBE LIFT
VALVE LIFT
INT./ EXH.
.237 .229 .239 .232 .239 .232 .242 .234 .255 .239
.407 .391 .411 .395 .411 .395 .415 .399 .434 .411
INT. EXH. INT. EXH. INT. EXH. INT. EXH. INT. EXH.
NISSAN L16, 18, 20B These profiles are designed for use in Nissan L16, 18, 20B applications. Valve durations and lift given for stock valve and rocker geometry. DESIGN NUMBER CAMSHAFT TYPE
VALVE DURATION
LOBE LIFT
VALVE LIFT
Street Profiles
8250 8255 8251 8252 8253 8254
@ .010" 240 252 260 268 280 292
@ .050" 194 204 214 222 236 246
.285 .293 .301 .308 .330 .344
.400 .410 .420 .430 .460 .480
Race Profiles
8260 8261 8262
294 300 306
258 264 270
.395 .400 .405
.573 .580 .587
Toyota 20R-22RE These profiles are designed for use in Toyota 20R-22RE applications. Valve durations and lift given for stock valve and rocker geometry. LOBE VALVE DESIGN NUMBER VALVE DURATION LIFT LIFT CAMSHAFT TYPE
Street Profiles
Race Profiles
484
INT./EXH. 8216/8217 8218/8219 8202/8203 8204/8205 8206/8207
@ .010" 247 255 263 271 279
@ .050" 206 214 222 230 238
.282 .288 .295 .301 .321
.419 .429 .440 .450 .484
8232/8233 8234/8235 8236/8237 8240/8241 8242/8243
317 321 325 321 325
275 279 283 279 283
.308 .305 .305 .328 .328
.460 .457 .457 .505 .505
WWW.CAMHELP.COM
Overhead Cam (DIRECT ACTING)
DESIGN NUMBER
RATED DURATION AT VALVE
6800 6801 6802 6803 6804 6805 6806 6807 6808
@ .010" 216 226 236 246 256 266 276 286 296
CAMSHAFT TYPE
VW or Direct 1" Tappet Direct - Bucket
DURATION IN DEGREES AT VALVE @ .050" 180 190 200 210 220 230 240 250 260
@ .200" 95 109 122 134 145 153 162 169 179
LOBE LIFT
MIN. LIFTEROD
MIN. BCR
.260 .280 .300 .320 .340 .360 .380 .400 .420
1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000
.640 .620 .600 .580 .560 .540 .520 .500 .480
LOBE LIFT
MIN. LIFTEROD
MIN. BCR
Thumpr™ Flat Head Ford - Direct Solid 1" Tappet (CCW ROTATION) DESIGN NUMBER
RATED DURATION AT VALVE
Intake 1" Tappet Direct
19520 19522 19524
@ .010" 267 275 283
@ .050" 227 235 243
@ .200" 160 169 177
.354 .368 .382
1.000 1.000 1.000
0.540 0.526 0.512
Exhaust 1" Tappet Direct
19531 19533 19535
299 307 315
241 249 257
151 160 168
.350 .364 .378
1.000 1.000 1.000
0.544 0.530 0.516
LOBE LIFT
MIN. LIFTEROD
MIN. BCR
.365 .360 .320 .360 .360
1.080 1.020 .900 1.000 .980
.550 .550 .500 .500 .500
LOBE LIFT
MIN. LIFTEROD
MIN. BCR
.410 .420 .430
1.100 1.100 1.100
.650 .650 .650
CAMSHAFT TYPE
DURATION IN DEGREES AT VALVE
Overhead Cam (DIRECT ACTING)
VW OR DIRECT 1" TAPPET
Can also be used in VW applications
OHC − MULTIPURPOSE BUCKET DESIGNS DESIGN NUMBER
RATED DURATION AT VALVE
9048 9042 9045 9044 9046
@ .010" 248 256 274 264 273
CAMSHAFT TYPE
OHC Direct - Bucket
DURATION IN DEGREES AT VALVE @ .050" 215 222 228 230 238
@ .200" 146 150 144 158 162
QUAD 4 − BUCKET DESIGNS DESIGN NUMBER
RATED DURATION AT VALVE
9013 9014 9015
@ .010" 260 266 272
CAMSHAFT TYPE Quad 4 Direct − Bucket
DURATION IN DEGREES AT VALVE @ .050" 226 232 238
@ .200" 160 166 172
1.800.999.0853
485
Overhead Cam (DIRECT ACTING)
Overhead Cam (DIRECT ACTING) OHZ − STREET/STRIP BUCKET DESIGNS DESIGN NUMBER
RATED DURATION AT VALVE
OHZ Direct − Bucket
9090 9091 9092 9093 9086 9087
@ .006" 258 262 268 274 280 286
@ .050" 214 218 224 230 236 242
OHZ Direct − Bucket
9094 9095 9109 9096 9108
264 272 280 280 284
220 228 235 236 239
CAMSHAFT TYPE
DURATION IN DEGREES AT VALVE
LOBE LIFT
MIN. LIFTEROD
MIN. BCR
@ .200" 149 153 158 163 168 173
.400 .400 .400 .400 .400 .400
1.180 1.180 1.180 1.180 1.180 1.180
.680 .660 .640 .620 .600 .600
153 160 150 166 163
.380 .380 .320 .380 .360
1.180 1.180 1.025 1.180 1.025
.650 .630 .500 .610 .500
LOBE LIFT
MIN. LIFTEROD
MIN. BCR
.480 .490 .500
1.200 1.200 1.200
.550 .550 .550
OHRX − HIGH RPM BUCKET DESIGN DESIGN NUMBER
RATED DURATION AT VALVE
9072 9073 9074
0.010" 281 287 293
CAMSHAFT TYPE OHRX Direct − Bucket
DURATION IN DEGREES AT VALVE @ .050" 260 266 272
@ .200" 199 204 210
PCI INTAKE SERIES − LIMITED RPM OHC 33mm BUCKET Fast Intake OHC Lift Rule & RPM Limited - 33mm Bucket, 0.738" BCR. Can be used with Hydraulic Bucket and zero lash or with Solid Bucket and 0.005" to 0.010" lash. LOBE NUMBER
RATED DURATION
19701 19702 19703
@ .006 293 297 301
CAMSHAFT TYPE PCI 33 Rated Duration @ .006" Tappet Lift
DURATION IN DEGREES @ .010 282 286 290
@ .020 267 271 275
DURATION IN DEGREES @ .050 248 252 256
@ .200 192 196 200
LOBE LIFT 0.498 0.498 0.498
TAPPET LIFT @ TDC 106° .144 .155 .166
110° .122 .133 .144
114° .100 .111 .122
PCX EXHAUST SERIES − LIMITED RPM OHC 33mm BUCKET Exhaust OHC Lift Rule & RPM Limited − 33mm Bucket, 0.738" BCR. Can be used with Hydraulic Bucket and zero lash or with Solid Bucket and 0.005" to 0.010" lash. LOBE NUMBER
RATED DURATION
19704 19705 19706 19707 19708
@ .006 290 294 298 302 306
CAMSHAFT TYPE PCX 33 Rated Duration @ .006" Tappet Liftt
486
DURATION IN DEGREES @ .010 280 284 288 292 296
WWW.COMPCAMS.COM
@ .020 264 268 272 276 280
DURATION IN DEGREES @ .050 242 246 250 254 258
@ .200 185 189 193 197 201
LOBE LIFT 0.498 0.498 0.498 0.498 0.498
TAPPET LIFT @ TDC 106° .126 .137 .148 .159 .170
110° .104 .115 .126 .137 .148
114° .083 .093 .104 .115 .126
CAMSHAFT TERMS
.050" Duration – duration measured in crank degrees from the point where the lifter rises .050" from the base circle on the opening side of the cam lobe to the point on the closing side of the lobe where the lifter drops to .050" from the base circle Advance – decreases the intake centerline and increases the exhaust centerline Advertised Duration – point of measurement for advertised duration can occur at any lift above the base circle – the lower the point of measurement for lift, the higher the duration angle Base Circle – part of the lobe profile that does not move the lifter Bottom Dead Center – position of a piston in which it is nearest to the crankshaft Cam Centerline – where the actual centerline of the #1 cylinder intake lobe is in relation to the #1 piston, defined in degrees of crank rotation after Top Dead Center Cam Follower – a roller or flat faced companion to the camshaft that transfers the action of the cam to the rest of the valve train by sliding or rolling on the cam lobe surface Cam Lift – maximum distance the cam profile will lift the lifter above the base circle Cam Lobe Separation – the actual spacing of the intake and exhaust lobes from each other for the same cylinder, a fixed amount ground into the shaft at the time of manufacture Cam Profile – actual shape of the cam lobe Camshaft – consists of a cylindrical rod running the length of the cylinder bank with a number of oblong lobes protruding from it, one for each valve. The cams force the valves open by pressing on the valve, or on some intermediate mechanism, as they rotate. Cam Walk – condition which occurs with roller tappet camshafts as a result of the forces of the cam being driven from one end and also from the forces of the lifters on the camshaft Dual Pattern – cams in which the intake lobe design is different from that of the exhaust Duration – the total angle in crankshaft degrees that a valve is open – duration determines where the power range will be for a cam Dynamometer (Dyno) – apparatus for measuring the torque of an automobile engine at various rpm and converting to horsepower Exhaust Centerline – angle in crank degrees between the event of maximum exhaust lift and that cylinder’s piston coming to TDC
Lobe Profile – contour of the cam lobe that determines how high and how long the valve is open Lobe Separation – equal to ½ the angle in crankshaft degrees of rotation between the maximum exhaust valve lift and maximum intake lift Net Valve Lift – gross valve lift minus the valve lash set for a mechanical camshaft – not specified for hydraulic cams Mechanical Tappet – solid link between the cam lobe which it is riding on and the pushrod which rides upon it Nose – top or full lift portion of the cam love, more specifically where the lifter and valve are kept open for as long as possible before the transition to the closing ramps are initiated Overlap – angle in crankshaft degrees that both the intake and exhaust valves are open simultaneously when the piston is at Top Dead Center Pre-Load – in hydraulic lifters the distance that pushrod submerges into a lifter’s pushrod seat (approximately .020"-.070" Ramps – lash ramp, opening ramp and closing ramp; portions of the cam love which do the actual lifting up or setting down of the lifter from the base circle or close valve part of the cam lobe Retard – increases the intake centerline and decreases the exhaust centerline Retro-Fit Hydraulic Roller – contain all of the same benefits and limitations as a standard hydraulic roller cam, however include specialized base circle to accommodate the taller hydraulic roller lifters in blocks that were factory equipped with a flat tappet valve train set-up Solid/Mechanical Flat Tappet – original race engine lifter, feature a more aggressive street performance or racing profile and are capable of higher engine rpm than hydraulic flat tappet camshafts; flat appearing lifter bottom follows the contours of the camshaft to operate the valve train components at the appropriate time, rotating within the lifter bore in a similar fashion to the hydraulic flat tappet lifter; solid lifter does not have the internal cavity and piston found with the hydraulic lifter and does not expand or contract with engine temperature Solid/Mechanical Roller – highest of all performance level camshafts; feature most aggressive camshaft lobe profiles and withstand the highest valve spring pressures; also use roller lifters that do not include an adjustment for valve train component expansion due to internal engine heat and requires regular lash adjustment service
Gross Valve Lift – total cam lift multiplied by the rocker arm ratio
Top Dead Center – crankshaft rotational position where the piston is furthest from the crankshafts center line
Hydraulic Flat Tappet – flat tappet lifter has a flat appearing base that rides on the cam lobe face, rotating slowly within the lifter bore; internally, the lifter features a cavity that fills with oil and a piston that is depressed by the pushrod and valve spring
Valve – mushroomed shaped object which is used to regulate the incoming fresh air/fuel mixture and the outgoing exhaust geases in the cylinder of an internal combustion engine
Hydraulic Roller – lifters equipped with a roller wheel that tracks along the camshaft lobe, reducing wear and friction, and enabling faster lobe ramp rates than flat tappet cams; quiet operation lifters feature the same internal design as hydraulic flat tappet lifters with internal cavities and pistons but do not rotate within the lifter bore
Valve Lash – mechanical clearance between the cam lobe and valve stem or transfer rocker when the valve is fully closed
Intake Centerline – angle in crank degrees between a cylinder’s piston coming to TDC and the event of maximum intake lift.
CAMSHAFT TERMS
CAMSHAFT TERMS
Valve Event – opening and closing points of the valve with relation to the crankshaft
Valve Train – components of train of parts used to operate the valves in conjunction with the camshaft
Lobe Centerline – imaginary line that goes from the center of the base circle through the point of maximum lift on a lobe
1.800.999.0853
487
LOBE INDEX
LOBE INDEX LOBE # PAGE#
LOBE # PAGE# LOBE # PAGE#
1027................. 473 1028................. 473 1030................. 470 1046................. 470 1152................. 473 1176................. 472 1180................. 472 1181................. 474 1183................. 474 1185................. 474 1186................. 472 1187................. 474 1188................. 472 1189................. 474 1240................. 473 1260................. 472 1261................. 473 1263................. 473 1268................. 472 1269................. 473 1271................. 472 1272................. 472 1273................. 473 1278................. 472 1285................. 473 1286................. 472 1287................. 473 1288................. 472 1289................. 473 1291................. 473 1293................. 473 1295................. 472 1301................. 470 1302................. 470 1306................. 473 1309................. 470 1320................. 473 1372................. 471 1373................. 471 1374................. 471 1375................. 471 1376................. 471 1377................. 471 1392................. 454 1393................. 466 1394................. 454 1395................. 466 1416................. 464 1417................. 464 1418................. 464 1419................. 464 1427................. 464 1429................. 464 1460................. 454 1461................. 454 1462................. 454 1464................. 454
1465................. 454 1466................. 454 1469................. 454 1473................. 454 1474................. 453 1476................. 453 1477................. 455 1479................. 454 1480................. 466 1481................. 455 1484................. 473 1485................. 473 1486................. 454 1487................. 473 1489................. 473 1490................. 470 1491................. 479 1492................. 454 1494................. 473 1495................. 473 1496................. 453 1498................. 453 1514................. 462 1515................. 462 1519................. 464 1520................. 464 1521................. 464 1522................. 464 1523................. 464 1524................. 464 1528................. 463 1530................. 463 1532................. 463 1534................. 463 1536................. 463 1538................. 463 1540................. 463 1542................. 463 1562................. 478 1563................. 478 1564................. 478 1565................. 478 1568................. 476 1570................. 476 1572................. 476 1609................. 454 1611................. 454 1612................. 454 1613................. 454 1617................. 454 1619................. 454 1620................. 454 1625................. 479 1628................. 454 1630................. 454 1634................. 479 1635................. 479
488
1639................. 454 1642................. 479 1649................. 479 1650................. 479 1658................. 454 1659................. 454 1660................. 466 1661................. 479 1662................. 479 1680................. 474 1681................. 474 1682................. 474 1683................. 474 1684................. 474 1685................. 474 1686................. 474 1695................. 477 1718................. 471 1719................. 471 1722................. 472 1723................. 477 1724................. 472 1726................. 472 1727................. 472 1728................. 472 1729................. 472 1734................. 477 1735................. 477 1736................. 472 1737................. 472 1742................. 472 1743................. 472 1744................. 472 1745................. 472 1746................. 472 1747................. 472 1748................. 472 1749................. 472 1770................. 470 1771................. 470 1775................. 477 1806................. 471 1808................. 471 1810................. 471 1812................. 471 1814................. 471 1816................. 471 1817................. 471 1820................. 471 1826................. 471 1828................. 471 1829................. 471 1832................. 471 1833................. 477 1834................. 477 1835................. 477 1836................. 477
WWW.CAMHELP.COM
LOBE # PAGE#
LOBE # PAGE# LOBE # PAGE#
1837................. 477 1839................. 470 1840................. 470 1842................. 470 1844................. 470 1846................. 470 1847................. 477 1848................. 477 1849................. 477 1850................. 474 1858................. 477 1859................. 477 1860................. 474 1862................. 474 1864................. 474 1866................. 474 1868................. 474 1871................. 474 1872................. 474 1873................. 474 1874................. 474 1875................. 474 1876................. 474 1877................. 474 1878................. 474 1879................. 474 1912................. 471 1914................. 471 1924................. 471 1925................. 471 1926................. 471 1927................. 471 1928................. 471 1929................. 471 1930................. 471 1931................. 471 1932................. 471 1933................. 471 1934................. 471 1939................. 475 1943................. 475 1945................. 475 1960................. 474 1962................. 474 1964................. 474 1966................. 474 1968................. 474 1975................. 475 1976................. 475 1977................. 475 1978................. 475 1979................. 475 1980................. 475 1982................. 475 1986................. 475 1987................. 475 1988................. 475
1989................. 475 1990................. 475 1991................. 475 1992................. 475 1993................. 475 1995................. 477 1996................. 477 1997................. 477 1998................. 477 1999................. 477 2037................. 475 2039................. 475 2041................. 475 2042................. 475 2043................. 475 2044................. 475 2045................. 475 2067................. 478 2068................. 478 2073................. 478 2074................. 478 2075................. 478 2076................. 478 2077................. 478 2082................. 478 2083................. 478 2084................. 478 2085................. 478 2096................. 479 2097................. 479 2098................. 479 2099................. 479 2114................. 479 2115................. 479 2116................. 479 2124................. 436 2125................. 436 2126................. 436 2127................. 436 2128................. 436 2129................. 436 2130................. 436 2131................. 436 2132................. 436 2133................. 436 2134................. 436 2135................. 436 2136................. 436 2138................. 479 2139................. 479 2140................. 479 2162................. 478 2163................. 478 2164................. 478 2165................. 478 2166................. 478 2167................. 478
2169................. 478 2171................. 478 2195................. 469 2196................. 469 2198................. 469 2199................. 469 2201................. 469 2202................. 469 2203................. 469 2208................. 467 2209................. 467 2210................. 467 2214................. 468 2215................. 468 2222................. 467 2223................. 467 2224................. 467 2225................. 467 2226................. 467 2227................. 467 2228................. 467 2229................. 467 2230................. 467 2231................. 467 2232................. 467 2233................. 467 2234................. 467 2235................. 467 2236................. 467 2237................. 467 2238................. 468 2239................. 468 2240................. 468 2241................. 468 2242................. 468 2243................. 468 2244................. 468 2245................. 468 2246................. 468 2247................. 468 2248................. 469 2249................. 469 2250................. 469 2251................. 469 2252................. 469 2253................. 469 2254................. 469 2255................. 469 2256................. 469 2257................. 469 2258................. 469 2265................. 468 2267................. 468 2273................. 468 2274................. 468 2275................. 468 2276................. 468
LOBE INDEX LOBE # PAGE# LOBE # PAGE#
2277................. 468 2278................. 468 2279................. 468 2280................. 468 2281................. 468 2290................. 476 2291................. 476 2292................. 476 2294................. 476 2296................. 476 2298................. 458 2314................. 458 2315................. 458 2318................. 458 2385................. 476 2387................. 476 2390................. 476 2391................. 476 2392................. 476 2393................. 476 2399................. 476 2486................. 459 2488................. 459 2490................. 459 2492................. 459 2494................. 459 2507................. 462 2508................. 462 2509................. 462 2510................. 462 2511................. 462 2512................. 462 2513................. 462 2514................. 462 2515................. 462 2516................. 462 2517................. 462 2518................. 462 2519................. 462 2520................. 462 2521................. 470 2522................. 470 2523................. 470 2524................. 470 2525................. 470 2526................. 470 2527................. 470 2528................. 470 2529................. 470 2539................. 468 2540................. 468 2541................. 468 2542................. 468 2543................. 468 2544................. 468 2551................. 470 2555................. 470
2557................. 470 2559................. 470 2560................. 470 2577................. 477 2578................. 477 2579................. 477 2580................. 477 2581................. 477 2586................. 476 2587................. 476 2588................. 476 2589................. 476 2688................. 464 2689................. 464 2690................. 464 2691................. 464 2692................. 464 2693................. 464 2694................. 464 2724................. 477 2725................. 477 2726................. 477 2727................. 477 2728................. 477 2735................. 458 2881................. 461 2882................. 461 2885................. 461 2906................. 464 2907................. 464 2908................. 464 2909................. 464 2950................. 460 2952................. 460 2953................. 460 2954................. 460 2958................. 460 2962................. 461 2963................. 461 2964................. 461 2965................. 461 2978................. 461 2979................. 461 2980................. 461 2981................. 461 2982................. 461 2983................. 461 2984................. 461 2985................. 461 2989................. 461 3010................. 432 3011................. 432 3012................. 432 3013................. 432 3014................. 432 3015................. 432 3016................. 432
3017................. 432 3018................. 432 3022................. 430 3024................. 430 3026................. 430 3028................. 430 3031................. 430 3033................. 432 3034................. 432 3035................. 432 3036................. 432 3037................. 432 3038................. 432 3039................. 432 3043................. 430 3045................. 430 3047................. 430 3050................. 429 3051................. 429 3052................. 429 3053................. 429 3056................. 430 3058................. 430 3100................. 429 3101................. 429 3102................. 429 3103................. 429 3104................. 429 3105................. 429 3106................. 429 3107................. 429 3108................. 429 3109................. 429 3110................. 429 3111................. 429 3112................. 429 3113................. 429 3114................. 429 3115................. 429 3116................. 429 3117................. 429 3118................. 429 3119................. 429 3120................. 429 3122................. 429 3150................. 429 3151................. 429 3152................. 429 3160................. 429 3161................. 429 3162................. 429 3163................. 429 3164................. 429 3168................. 429 3170................. 429 3171................. 429 3188................. 430
LOBE # PAGE#
LOBE # PAGE# LOBE # PAGE#
3190................. 430 3192................. 431 3194................. 431 3196................. 431 3207................. 465 3282................. 437 3283................. 437 3284................. 437 3285................. 437 3286................. 437 3287................. 437 3288................. 437 3289................. 437 3295................. 437 3296................. 437 3297................. 437 3298................. 437 3299................. 437 3300................. 430 3301................. 430 3302................. 430 3303................. 431 3304................. 430 3305................. 430 3306................. 431 3307................. 431 3308................. 431 3309................. 431 3310................. 430 3311................. 430 3312................. 430 3313................. 431 3314................. 431 3315................. 431 3316................. 431 3317................. 431 3318................. 431 3319................. 431 3322................. 430 3323................. 430 3324................. 431 3326................. 431 3329................. 437 3330................. 437 3331................. 437 3332................. 437 3333................. 437 3334................. 437 3335................. 437 3336................. 437 3337................. 437 3338................. 437 3339................. 437 3340................. 431 3341................. 431 3342................. 431 3343................. 431
3344................. 431 3345................. 431 3346................. 431 3347................. 431 3348................. 431 3349................. 431 3354................. 432 3355................. 432 3356................. 432 3357................. 432 3358................. 432 3359................. 432 3362................. 432 3363................. 432 3364................. 432 3370................. 433 3371................. 433 3372................. 433 3373................. 433 3374................. 433 3375................. 433 3376................. 433 3377................. 433 3384................. 437 3385................. 437 3386................. 437 3387................. 437 3388................. 437 3389................. 437 3390................. 437 3391................. 437 3392................. 437 3393................. 437 3394................. 437 3395................. 437 3396................. 437 3397................. 437 3398................. 437 3399................. 437 3400................. 437 3404................. 437 3405................. 437 3410................. 433 3411................. 433 3414................. 431 3415................. 431 3447................. 433 3473................. 433 3474................. 433 3475................. 433 3479................. 433 3528................. 430 3532................. 430 3534................. 430 3536................. 430 3541................. 430 3543................. 430
3545................. 430 3547................. 430 3552................. 430 3554................. 430 3556................. 430 3563................. 430 3565................. 430 3567................. 430 3610................. 431 3611................. 431 3612................. 431 3613................. 431 3628................. 431 3630................. 431 3632................. 431 3633................. 431 3634................. 431 3635................. 431 3636................. 431 3637................. 431 3638................. 431 3652................. 434 3653................. 434 3654................. 434 3655................. 434 3656................. 434 3657................. 434 3658................. 434 3659................. 434 3660................. 434 3661................. 434 3662................. 434 3663................. 434 3666................. 434 3667................. 434 3668................. 434 3705................. 434 3706................. 434 3707................. 434 3708................. 434 3709................. 434 3710................. 434 3711................. 434 3712................. 434 3713................. 434 3714................. 434 3715................. 434 3716................. 434 3717................. 434 3718................. 434 3719................. 434 3720................. 435 3721................. 435 3722................. 435 3723................. 435 3724................. 435 3725................. 435
1.800.999.0853
LOBE INDEX
LOBE # PAGE#
489
LOBE INDEX
LOBE INDEX LOBE # PAGE#
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