Engine Bearings Camshafts Valvetrain Parts GM LS / LT Parts Hemi Parts Wheels Tires Cold Air Kits Rebuild Kits Comp Cams Big Mutha' Thumpr 243/257 Hyd Roller Cam for OE Roller SBC 305-350
Big Mutha\' Thumpr* 243/257 Hydraulic Roller Cam for OE Roller SBC 305-350. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Engine Family Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998) RPM Operating Range 2,500-6,200 Cam Type Hydraulic Roller Camshaft Series Thumpr Camshaft Gear Attachment 3-Bolt Usage Street/Strip California Proposition 65 WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Advertised Intake Duration 299 Advertised Exhaust Duration 319 Intake Duration at .050 Inch Lift 243 Exhaust Duration .050 Inch Lift 257 Intake Valve Lift 0.533 Exhaust Valve Lift 0.519 Lobe Separation 107 Valve Timing Lift 0.006 Exhaust Close ATDC 53 Intake Open BTDC 46 Exhaust Open BBDC 86 Intake Close ABDC 73 Lifter Style Hydraulic Roller Type: Camshaft Performance Part: Yes MPN: 086028 California Prop 65 Warning: Cancer and Reproductive Harm. Brand: Comp Cams Manufacturer Part Number: 08-602-8 Shipping
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