COMP Cams SK31-218-2 High Energy/Marine 218/218 Hydraulic Flat Cam SK-Kit for Ford 221-302 Good for daily driven performance vehicles. Mid-range power. Slightly lower gears. Mild rough idle. Single or dual engines. Best for inboard/outboard. Noticeable idle. 1,500-5,500 RPM Operating Range 218/218 Duration at .050". 110 Degree Lobe Separation Angle. 0.456"/0.456" Valve Lift SK Kits include a camshaft, a set of lifters, assembly lubricant, a timing set and instructions. High Energy grinds are a good blend of efficiency and performance: ideal for performance street rebuilds. Works well with mainly stock components such as rockers, manifolds, heads, compression, torque converters and gears. Fits Ford 221-302 w/ OE Flat Tappet Cams Made in USA