Product Information Cam and lifter kit for Big Block Chevy engines; CL-Kit includes cam, lifters, assembly lube, instructions and decals; Hydraulic - Xtreme Energy: Street/strip, 2800+ stall, rough idle. 9.5:1+ compression.; 284/296 Advertised Duration, 240/246 Duration .050", .574"/.578" Lift, 110 Lobe Separation; Valve spring upgrade required
