COMP Cams Ultra Gold ARC Aluminum Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Gold - Small Block Chevy (Set of 16) 12591689 Mild modifications

Mild modifications

This eliminates all differential movement

Direct bolt-on to Holley cast aluminum LS valve covers with 72mm bolt spacing

3135 in Valve Stem

COMP Cams Ultra Gold ARC Aluminum Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Gold - Small Block Chevy (Set of 16) 12591689 Mild modificationsThese COMP Cams Ultra Gold Aluminum Roller Rocker Arms with a 7 16" stud diameter and 1. 6 ratio are designed for Chevrolet V8 265 400 applications. The new modern design features of these Ultra Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra Gold Aluminum Rocker Arms are precision CNC machined to strict tolerances. Developed to meet