COMP Cams Rocker Arms CS 1.6 3/8 Ultra

Starting with investment cast 8650 chromemoly steel, these Ultra Pro Magnum rocker arms are built to handle serious work. The arched, web-like design adds strength and rigidity while keeping the moment of inertia down, which helps with overall engine balance. They feature a 1.6 ratio and a 3/8" stud diameter, making them a solid choice for many Chevrolet V6 engines, including those found in the Astro van, Express 1500, and S10 pickup trucks, as well as various Buick models like the LaCrosse and Rendezvous.

The black oxide exterior finish isn't just for looks; it helps prevent corrosion and adds to the rocker arms' durability. Inside, you'll find oversized trunnions, precision-sorted needle bearings, and hardened roller tips, all working together for improved performance and dependability. COMP Cams also designed these with optimized retainer and valve spring clearances, so you can use most common spring diameters and locks without clearance issues. They're rated to handle up to 850 lbs of open spring pressure, giving you confidence when you're pushing your engine.