Product Information Cam and lifter kit for Big Block Chevy engines; CL-Kit includes cam, lifters, assembly lube, instructions and decals; Hydraulic - Xtreme Energy: Strong torque. Excellent response, heavy towing in 454 with 4.10 gear.; 262/270 Advertised Duration, 218/224 Duration .050", .504"/.510" Lift, 110 Lobe Separation; Valve spring upgrade required
