COMP Cams Ultra Pro Mag Rocker Chrysler BB

When you're rebuilding the top end of your Chrysler 383-440 Big Block, you want parts that are built to last and perform. This COMP Cams Ultra Pro Magnum rocker arm is designed for that purpose. It's a shaft-mounted, 1.5 ratio rocker arm, specifically made for the left side of your engine. The investment cast 8650 chromemoly body, combined with an arched, web-like design, gives it increased strength and rigidity. This construction helps reduce the moment of inertia, which optimizes the dynamic balance of your valvetrain.

Beyond its strong build, this rocker arm features a unique black oxide exterior finish that helps prevent corrosion and adds to its overall durability. You'll also find oversized trunnions, precision-sorted needle bearings, and hardened roller tips, all contributing to better performance and dependability. The design also takes into account retainer and valve spring clearances, allowing for use with most common spring diameters, retainers, and +.050" locks without causing fitment issues. COMP Cams backs these rocker bodies with a lifetime warranty against breakage, and they're rated for use with up to 850 lbs of open spring pressure.

This rocker arm is part of a system designed for a range of Chrysler, Dodge, and Plymouth vehicles from the late 1950s through the late 1970s, including popular models like the Dodge Charger and Plymouth Barracuda. Remember, this rocker arm requires ball/ball style pushrods for proper installation.