COMP Cams Rocker Arm CS Tw 1.6 7/16 Ultra

Starting with an investment cast 8650 chromemoly body, 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 for better dynamic balance. A black oxide exterior finish is applied to help prevent corrosion and increase durability over time.

These rocker arms are designed to work with most common valve springs, retainers, and locks, even those that are +.050" longer, without causing clearance issues. They feature oversized trunnions, precision-sorted needle bearings, and hardened roller tips for reliable performance. This specific rocker arm has a 1.6 ratio and a 7/16" stud, intended for the intake valves on Small Block Chevy engines equipped with Twisted Wedge heads. They are rated for use with up to 850 lbs of open spring pressure and come with a lifetime warranty against breakage of the rocker bodies.

This part fits a wide range of vehicles, including many Chevrolet, Buick, and Cadillac models from the 1980s and 1990s. Always check the full fitment list to confirm compatibility with your specific application.