Competition Cams CL122062 High Energy/Marine 260H Cam & Lifters Kit For Chevrolet 262-400 Cam and lifter kit for Small Block Chevy engines CL-Kit includes cam, lifters, assembly lube, instructions and decals Hydraulic High Energy: Vans, pickups, 4WD and towing, in 350 ci, good idle, strong mid-range torque OR High Energy Marine: Single or dual engine with inboard/outboard drive for ski and economy Valve spring upgrade required