Comp cam 350 sbc marine1/7/2023 ![]() ![]() ![]() The lower number "220" indicates a smoother lift rate where the "420" number is a faster lift rate profile. Hydraulic Flat Tappet | Hydraulic Roller | Mechanical Flat Tappet | Mechanical RollerĪll of our numbered series are named for their lift rates or lobe acceleration. Nissan-Infiniti | Oldsmobile | Pontiac | Subaru | Toyota-Lexus | Volkswagen To get the best performance for your application, the camshaft profile must match your head and valve train components.ĪMC | Buick | Chevy | Ford | Holden | Honda | Mitsubishi | Mopar/Dodge/Chrysler The profile you choose determines where your maximum horsepower and torque will occur. Camshafts use a combination of separation angles, lift, duration and lobe acceleration/ramp rates to create what is called a cam profile. Camshafts are the most critical part of your engine’s performance. Crower has been designing and grinding hot-street and cutting-edge full race profiles for over 50 years.
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