Pro Magnum™ Shaft Rocker Arms; Adjusting Screw for #1321 & #1322

In stock

• Made from SAE 8620 chromemoly steel• Rocker bodies are heat-treated to obtain maximum strength and stiffness• Unique oil system lubricates all critical parts for long lasting service• Big Block Chrysler system (part #1321-16) includes a special adjuster which allows the use of conventional ball ended pushrods