Forsale is a Comp Cams retro-fit Thumpr hydraulic roller cam kit for a big block Chevy engines. In the kit is cam lifters roller tip rockers valve springs and retainers. Everything is used like new. Everything is Comp Cams except the springs. They are Howard’s Cams. The part number for the cam is 11-600-8. Very streetable cam with a real choppy idle. Needs at least 2000 plus stall and gears. Price is $1100. Selling the kit together. Not separating.