About this product
Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Big Block 396-454
treet/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. *BBC 1965-66 396 c.i. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a camshaft with the oiling groove
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.






