proflow rocker arm screw in stud kit, 7/16, top 7/16-14 in., bottom 7/16-20 in. universal, chevrolet, ford, holden v8, set of 16

Proflow screw-in rocker arm studs are ideal for high performance cams in cars used primarily on the street. They are constructed from alloy steel, have no oil holes, and are concentric to keep the rockers, pushrod, and valve stems in alignment. Can be used with posi-locks but ideally suited for lock nuts as the top of stud is not surface ground.