About this product
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Buick 400, 430, 455. Street/strip, needs 9.5:1compression, 2800+ stall, intake, gears and headers, very rough idle.
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.






