COMP Cams Rocker Arm CS 1.6 3/8 Ultra Pr

Starting with investment cast 8650 chromemoly steel, these Ultra Pro Magnum rocker arms are built for strength. The arched, web-like design not only adds rigidity but also helps reduce the moment of inertia, which is important for how the engine breathes at higher RPMs. A black oxide exterior finish is applied to help prevent corrosion and increase overall durability, keeping them looking good and working well for a long time.

You'll find oversized trunnions, precision-sorted needle bearings, and hardened roller tips inside, all contributing to dependable performance. COMP Cams has also optimized the retainer and valve spring clearances, meaning you can use most common spring diameters, retainers, and +.050" locks without running into clearance or fitment issues. This makes them a solid option for a wide range of Chevrolet V6 and Small Block V8 engines, including popular models like the Chevrolet Astro, Camaro, and Impala from 1988 and later, as long as they use a 3/8" stud and self-aligning rockers.