Comp Cams Big Mutha Thumpr Hyd Camshaft & Lifters Kit for Chevrolet BBC 396 454
Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Big Block 396-454 Thumpr™ 243/257 Hydraulic Flat Cam for Chevrolet Big Block 396-454. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. *BBC 1965-66 396 c.i. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models.Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)RPM Operating Range: 2,300-6,200Grind Number: 295TH7Cam Type: Hydraulic Flat TappetLifter Style: Hydraulic Flat TappetCamshaft Series: ThumprUsage: Street/StripCalifornia Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.govAdvertised Intake Duration: 295Advertised Exhaust Duration: 313Intake Duration at .050 Inch Lift: 243Exhaust Duration at .050 Inch Lift: 257Intake Valve Lift: 0.522Exhaust Valve Lift: 0.507Lobe Separation: 107Exhaust Close ATDC: 49Intake Open BTDC: 44Exhaust Open BBDC: 84Intake Close ABDC: 71Camshaft Gear Attachment: 3-Bolt
Performance Part: Yes Interchange Part Number: choppy lopey idle big block chevy hp hyd hydraulic cam California Prop 65 Warning: Cancer and Reproductive Harm P65warnings.CA.Gov Type: Camshaft Other Part Number: 11-602-4 Fitment Type: Performance/Custom MPN: CL116024 Manufacturer Part Number: CL11-602-4 Universal Fitment: No Brand: Comp Cams Manufacturer Warranty: Unspecified Length Items Included: Lifters Shipping
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