COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy RS003C0113 Vortec / ZZ6

Vortec / ZZ6

Our standards are the highest in the performance industry

325 lb/in Spring Rate

Complete assembly includes #HOW24097 & #HOW23689

It mounts between the oil filter and block and bolts into the mounting holes left after the bypass is removed

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy RS003C0113 Vortec / ZZ6The Ultra Pro Magnum Roller Rocker Arms for Big Block Chevy 396 454 applications take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 7 16" stud diameter and 1. 7 ratio. The 8650 chromemoly material and arched, web like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent