LOBE RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE 0 Lash CAMSHAFT TYPE NUMBER DURATION DEGREES TDC ROCKER ARM RATIO

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1 A look into the COMP Cams Master Lobe Library Since 1977, COMP Cams main goal has been to be the best in camshaft design and technology. The techniques and ideas incorporated in our camshaft designs have constantly evolved as new concepts and ideas have been created. The lobe designs and specifications listed on the following pages represent the accumulation of all of our efforts toward camshaft design. These lobe specification pages have been arranged into specific groups. Each group is unique in its own way and purpose. A brief description of each lobe section will assist you in the selection of the individual lobe designs to accommodate your own specific need. Due to the wide variety of applications and designs, it is suggested that you contact COMP Cams technical staff at for assistance in determining the right combination for your application. Hydraulic Flat Tappet Section 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. Must use a minimum tappet diameter of.842 (Most GM) or larger. High Energy Hydraulic.006 Tappet Lift MAGNUM HYDRAULICS Magnum Hydraulics are to be used in high performance applications with a minimum tappet diameter of.842 (Most GM) or larger. These lobes are more aggressive in their design characteristics and can be used as intake or exhaust lobes. Magnum Hydraulic Rated Tappet Lift FAX

2 DUAL ENERGY HYDRAULICS Designed for the Dual Energy cam series. These lobes are good for every day driving where a broad torque curve is necessary. Very easy on related components. Designs can be used as intake or exhaust lobes. Minimum tappet diameter of.842. Dual Energy Hydraulic Rated Tappet Lift A A A A NEW 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 our New Nostalgia Plus series to capture the essence of the Factory Muscle Cars of the 60's and 70's. These profiles are slightly slower off the seat than the Xtreme Energy profiles, but have excellent area under the curve for outstanding power. New Nostalgia+ Rated Tappet Lift

3 XTREME ENERGY HYDRAULICS 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 gasses from the combustion chamber to further increase horsepower. Xtreme Energy Hydraulic Rated Tappet Lift Intake Lobes Xtreme Energy Hydraulic Rated Tappet Lift Exhaust Lobes FAX

4 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 degrees degrees duration) were designed with large cubic inch engines in mind. RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE 0 Lash CAMSHAFT TYPE DURATION DEGREES TDC ROCKER ARM RATIO Race Hydraulic.006 Tappet Lift PURPLE PLUS HYDRAULICS (.904 MIN TAPPET) These use the same ramps as our New Nostalgia Plus lobes, but have more velocity for use with Chrysler.904 minimum tappet diameters. Purple Plus Rated Tappet Lift.904 Min. Dia XTREME CHRYSLER HYDRAULICS (.904 MIN TAPPET) Xtreme Energy designs optimized for use with.904 minimum tappet diameters. The additional velocity allowed with the Chrysler.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. Xtreme Chrysler Hydraulic.006 Tappet Lift.904 Min. Dia. Intake Lobes Tappet Lift.904 Min. Dia. Exhaust Lobes

5 Hydraulic Roller Section HIGH ENERGY AND 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. Hydraulic Roller.006 Tappet Lift Low Lift Hydraulic Roller.006 Tappet Lift High Lift FAX

6 XTREME ENERGY HYDRAULIC ROLLERS These designs share all of the characteristics of the flat tappet lobes but we have added the new technology of 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. Xtreme Energy.006 Tappet Lift Small Block Journal Big Block Journal Ford Journal

7 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. Xtreme 4X4.006 Tappet Lift Small Block Journal XTREME MARINE HYDRAULIC ROLLERS 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. Xtreme Marine.006 Tappet Lift Big Block Journal XTREME MARINE HYDRAULIC ROLLERS - HIGH LIFT 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. Xtreme Marine Hi Lift.006 Tappet Lift Big Block Journal FAX

8 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, manifolds and the new COMP #26915 and #26918 valve springs. Xtreme RPM for LS1 Rated LS1 55 mm Journal Xtreme RPM for LS1 High Lift Rated LS1 55 mm Journal XTREME ENERGY XE-R FOR LS1 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 LS-1 applications. XE-R for LS1 Rated Tappet Lift LS1 55 mm Journal

9 CHEATER HR LIFT RULE COMPETITION HYDRAULIC ROLLERS The Cheater HR lift rule profiles can be run with either hydraulic roller lifters or with solid roller lifters and tight (.010 to.016 ) lash settings. These are very popular in Mustang lift rule class racing..312 Lobe Lift Cheater HR Rollers Rated Tappet Lift RACE ONLY! Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift FAX

10 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. Mustang R Rollers Rated Tappet Lift RACE ONLY! Solid Flat Tappet Section 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. RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE 0 Lash CAMSHAFT TYPE DURATION DEGREES TDC ROCKER ARM RATIO High Energy Solids.015 Tappet Lift Magnum Solids.015 Tappet Lift NEW NOSTALGIA PLUS SOLIDS Like the New 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. New Nostalgia+.015 Tappet Lift

11 XTREME ENERGY 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 most aggressive race solids, but feature a special closing section to eliminate excessive noise. Xtreme Energy Solid.015 Tappet Lift HIGH TORQUE SOLIDS The High Torque Solid is designed to be used on.842 or larger tappet diameters. These are our winningest 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. High Torque Solids.018 Lash HIGH RPM SOLIDS These designs are to be used primarily on engines 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. High RPM Solids.018 Lash FAX

12 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 result. These have been used successfully in everything from Winston Cup and endurance applications to Drag Racing and Hobby Stocks. High Tech Solids.018 Lash TIGHT LASH SOLIDS 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. Tight Lash Solids.018 Lash 6312 TL TL TL TL TL TL TL TL TL TL TL TL 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 can are required to operate at higher engine speeds than that fast of a ramp will allow. HTL Lifters are highly recommended with these profiles. High RPM II Solids.018 Lash

13 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 infamous 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. XTQ Solid Lifter.018 Lash XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTQ XTX SOLIDS The new XTX Solids are an excellent choice for exhaust profiles to be coupled with either the XTQ of MH profiles or can be use 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. XTX Solid Lifter.018 Lash FAX

14 MAX AREA (MA) SOLIDS The Max Area Series is designed for 2-barrel and stock intake applications which are airflow 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. Max Area 6208 MA MA MA MA MA MA MA MA MA MA MA MA MA Technical assistancecamshaft and valve train 251

15 MAX AREA LIFT RULE The Max Area Lift Rule lobes can be run with solid lifters or 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 excellent in lift rule oval track, road race and high RPM NHRA Stock Eliminator classes. Checks 21 degrees 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 we learn from our Spintron testing to provide the best performance in all lift rule applications. Grouped in lobe lift increments for convenient selection. Max Area Low Lift Lash Continued on the next page.238 Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift Lobe Lift FAX

16 MAX AREA LIFT RULE Continued from the last page Max Area Low.289 Lobe Lift Lift , 295, 296 Lobe Lift Lash Lobe Lift , 306 Lobe Lift Lobe Lift , 325 Lobe Lift Lobe Lift

17 MH SOLIDS 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's new #26094 valve spring, 3/8 min pushrod diameters, High Tech Lite oiling tappets, and shaft mounted rockers are all highly recommended. Please consult with a COMP Cam's Cam Help Technician or one of our Engine Builder Sales personnel before using these profiles to reduce the risk from improper component selection. MH Solid Lifter.018 Lash 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 COMP Cam's Cam Help Technician or one of our Engine Builder Sales personnel before using these profiles to reduce the risk from improper component selection. MHF Solid Lifter.018 Lash FL & SQ SOLIDS The FL series is designed to provide excellent area under the curve with an.875 tappet. These work great in place of TL's 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. FL.875 Solids 7130 FL FL FL FL FL SQ.875 Solids FAX

18 HIGH RPM DASH 12 SOLIDS Designed to turn high engine speed while maintaining control of the valve. Must use.875 diameter lifter. For use with rocker arms. Easy on valve train components. Intake designs have faster opening ramps and can be used on intake or exhaust. Exhaust designs have symmetric ramps and are smoother. High RPM Dash 12 Solids Intake Designs Exhaust Designs 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. Dash Technical assistancecamshaft and valve train 255

19 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 rocker ratios. XX Series XX XX XX XX XX XX XX XX Open Designs XX XX XX XX XX XX XX XX XX XX XX XX HIGH ROCKER RATIO SOLIDS Specially designed for NASCAR Winston Cup restrictor plate engines. Use with 2.0:1 intake rocker and 1.9:1 exhaust along with a spring. Very smooth for 2.0:1 design, and very easy on other valve train parts. High FAX

20 HIGH ROCKER RATIO SERIES II SOLIDS Specially designed for NASCAR Winston Cup restrictor plate engines. Use with 2.0:1 intake rocker and 1.9:1 exhaust along with a spring. More aggressive than earlier 2.0:1 design, but still very easy on valve train parts. High Ratio N SERIES SOLIDS Our most popular Winston 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 the XX series. Needs.875 HTL tappet and true lifter bores with very careful break-in. N Series Intake N Series Exhaust N N N N N N N N N N-3E N-1E N-1E N-1E N-1E OVAL + SOLIDS These profiles have their design based on the ever popular N-1 series, but have been optimized for the higher rocker ratios, tighter lash settings and lower compression used in today's Winston Cup engines. For use with 1.7 to 1.8:1 rockers (or more in qualifying.) Requires the same care as the N-1 for break-in. Oval

21 FE.875 SOLIDS These designs are for use in NASCAR Winston 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 peek torque and above peek power if the valve train is NRX SOLIDS The NRX Solids are designed for use in Winston 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 CHRYSLER SPECIAL SOLIDS These lobes are for use only in Chrysler Corporation engines with.904 tappet diameter. The Specials are to used in 426 cubic inch or larger engines. Developed for the Top Fuel drag racing program, these designs offer excellent torque and horsepower. RATED DURATION IN LOBE TAPPET LIFT THEORETICAL VALVE 0 Lash CAMSHAFT TYPE DURATION DEGREES TDC ROCKER ARM RATIO Chrysler Special.904 Min. Dia FAX

22 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. MP Solids.904 Min. Dia..018 Lash 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 lifter. Please consult with a COMP Cam's Cam Help Technician or one of our Engine Builder Sales personnel before using these profiles to reduce the risk from improper component selection. MM Solids.904 Min. Dia..018 Lash Technical assistancecamshaft and valve train Click here to advance to next section 259