COMP Cams 19012-12 - Rocker Arms, "Ultra Gold" SBC 7/16" 1.3

COMP Cams Ultra-Gold Aluminum Break-In Roller Rocker Arms, 1.3 Ratio, 7/16" Stud Diameter for Small Block Chevrolet, Set of 12 These COMP Cams Ultra-Gold Aluminum Break-In Rocker Arms with a 7/16" stud diameter and 1.3 ratio are designed for Chevrolet V8 265-400 applications. They aid the break-in procedure with lower than stock ratios by eliminating the excess open spring pressure during the break-in process For Small Block Chevy applications with 7/16" studs, 1.3 Ratio; Designed for high performance street and race engines; Precision-sorted trunnion bearings withstand elevated valve spring pressure and valve lift; Additional clearance, up to 1.650" O.D. valve spring;