COMP Cams Ultra-Gold Aluminum Roller Rocker Arms, 1.5 Ratio, 7/16" Stud Diameter for Pontiac V8. These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 7/16" stud diameter and 1.5 ratio are designed for Pontiac V8 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 the demands of professional engine builders, these rockers include features never before possible in an aluminum rocker arm. Increase engine power, enhance valve train stability and improve oiling.
Definitely very high quality rockers. Fit n finish are excellent and perform as advertised. They are however, robust enough that with the poly locks that standard valve covers are too short. On my Pontiac with Edelbrock D Ports, my stock valve covers are a half inch too short. Also careful measurements will need to be taken when degreeing the cam for the correct push rod length in order to maintain correct valve train geometry, my push rods are now longer than stock.