BCOMP Cams 1220-16 High Energy Nitrided Steel Rocker Arm with 1.5 Ratio and 716" Stud Diameter for Chevrolet Small Block Engine, (Set of 16) ReviewbP PP COMP Cams 1220-16 High Energy Nitrided Steel Rocker Arm with 1.5 Ratio and 716" Stud Diameter for Chevrolet Small Block Engine, (Set of 16) PFor Small Block chevy applications with 716 inch studs, 1.