About this product
Thumpr 235/249 Hydraulic Flat Cam for Chevrolet Big Block 396-454
High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
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.






