Cam and lifter kit for Big Block Chevy engines; CL-Kit includes cam, lifters, assembly lube, instructions and decals; Hydraulic - Big Mutha' Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.; 295/312 Advertised Duration, 243/257 Duration .050", .522"/.507" Lift, 107 Lobe Separation; Valve spring upgrade required
