About this product
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam GK-Kit for Ford 351W. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Fits Ford Small Block Engines originally equipped with "Old" firing order and 351 Windsor engines with the "Windsor" firing order
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.






