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COMP Cams 12-601-4 Mutha Thumpr Cam, Small Block Fits Chevy, 2200-6100 RPM
Have you ever been to the races and heard how nasty the cams sound? COMP Cams has developed the Thumpr series of cams that give you every day drivability, but have that nasty race engine sound. Pick the cam that fits your application, add a set of Comp Cam hydraulic lifters and you will be the talk of the town. High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. Valve lash: intake/exhaust - hydraulic. Duration: 287 intake, 305 exhaust. 050 life: 235 intake, 249 exhaust. Stock springs cannot be used. 50-State legal on'93 & earlier S. Related Items / Suggested Parts. COMP Cams 858-16 Pro Magnum Hydraulic Lifters, Chevy, Set of 16. Speedway Racing Valve Springs, 1.25 Inch O. COMP Cams 159 Engine Break-In Oil Additive, 12 Ounce. Speedway Motors is America's Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years.