Comp Cams Rocker Arm, Ultra Pro Magnum, 7/16" Stud Mount, 1.70 Ratio, Full Roller, Chromoly, Big Block Chevy, Set of 16

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, these rockers fit Chevrolet 396-454 with a 7/16" diameter stud.