About this product
Thumpr™ 227/241 Hydraulic Flat Cam for Chevrolet Big Block 396-454. High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
Description supplied by Fast Track Auto through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






