About this product
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Pontiac 265-455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Pontiac 265-455 V8
Description supplied by Titan Motorsports through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






