COMP Cams Camshaft A8 291THR7 Thumper - cca10-601-11

*Thumpr Camshafts* * Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods * Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note * Best with aftermarket converters and more rear gear PartNumber : cca10-601-11 Description : Mutha Thumpr Camshaft Title : 10-601-11 CamShaft, A8 291THR7 THUMPR Advertised Exhaust Duration : 311 Advertised Intake Duration : 291 Assembly Lubricant Included : No Basic Operating RPM Range : 2,200-6,100 California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Cam Type : Hydraulic Roller Camshaft Gear Attachment : 1-Bolt Camshaft Material : Billet Steel Camshaft Series : Thumpr Engine Family : American Motors 290-401 c.i. 8 Cylinder (1966-1991) Exhaust Duration at .050 inch Lift : 249 Exhaust Valve Lift : 0.526 Grind Number : 291THR7 Intake Duration at .050 Inch Lift : 235 Intake Valve Lift : 0.54 Lifter Style : Hydraulic Roller Lifters Included : No Lobe Separation : 107 Usage : Street/Performance Valve Springs Required : Yes Exhaust Duration @ .050 in. : 249 Intake Duration @ .050 in. : 235 Intake Valve Lift(in) : 0.540 Exhaust Valve Lift(in) : 0.526 RPM Range : 2200-6100 Intake Duration : 291 Lifter Type : Hydraulic Roller Retrofit Exhaust Duration : 311 Engine Components::Camshafts