COMP Cams SK12-268-4 Xtreme Energy Computer Controlled 224/230 Hydraulic Flat Cam SK-Kit for Chevrolet Small Block Best cam for modified 350 TPI with improved chip, injectors, plenum, runners and exhaust. 1,800-5,800 RPM Operating Range 224/230 Duration at .050". 114 Degree Lobe Separation Angle. 0.479"/0.480" Valve Lift SK Kits include a camshaft, a set of lifters, assembly lubricant, a timing set and instructions. Excellent performance in street carbureted applications. Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve. Best performance with aftermarket intake manifolds, headers and lower gear ratios. Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. Made in USA