Cam and lifter kit for Small Block Ford engines; CL-Kit includes cam, lifters, assembly lube, instructions and decals; Hydraulic - High Energy: Good for daily driven performance vehicles. Mid-range power. Slightly lower gears. Mild rough idle. OR Marine: Single or dual engines. Best for inboard/outboard. Noticeable idle.; 268/268 Advertised Duration, 218/218 Duration .050", .456"/.456" Lift, 110 Lobe Separation;