Building or rebuilding a classic Chevy big-block or W-engine? These PRW stainless steel rocker arms are a high-quality performance upgrade. They have a 1.7 ratio and are made from premium 15-5ph stainless steel, which is strong and resists deflection under high RPMs. They feature full-cage needle bearings for reduced friction, and the roller tips are heat-treated Cr40 steel for durability. They're designed with extra clearance to work with large diameter valve springs, which is common in performance builds. Each rocker is hand-polished and inspected. They fit a wide range of Chevy engines from 1958-2000, including the 396, 427, 454 big-blocks and the 348 & 409 W-engines. They come with a lifetime guarantee against breakage on the rocker body itself. A great choice for a street performance or race engine.
