About this product
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Small Block 262-400
Street/strip, needs 9.5:1 compression, 2800+ stall, intake gears and headers, very rough idle.
Grind Number: 295TH7
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
RPM Operating Range: 2,500-6,400
Cam Type: Hydraulic Flat Tappet
Lifter Style: Hydraulic Flat Tappet
Camshaft Series: Thumpr
Camshaft Gear Attachment: 3-Bolt
Usage: Street/Strip
Valve Springs Required: Yes
Camshaft Material: Cast Iron
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration: 295
Advertised Exhaust Duration: 313
Intake Duration at .050 Inch Lift: 243
Exhaust Duration at .050 Inch Lift: 257
Intake Valve Lift: 0.5
Exhaust Valve Lift: 0.486
Lobe Separation: 107
Description supplied by AMS RACING through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
