COMP Cams Alum Rocker Arms Chrysler BB 1.6in

If you're rebuilding the valvetrain on your Chrysler big block engine, especially for a street performance application, these COMP Cams shaft mount aluminum rocker arms are a solid choice. They replace the stock rockers and are designed to handle more aggressive camshafts and higher spring pressures than factory parts. This set is specifically for Chrysler 383 and 440 cubic inch V8 engines, featuring a 1.6 ratio to alter the valve lift.

These rockers are built from a strong aluminum alloy with a tensile strength of 80,000 psi, meaning they can withstand the rigors of performance use without excessive flex. The needle bearing trunnions are a key feature, allowing them to handle valve spring open pressures up to 350 lbs. This is crucial for maintaining valve control at higher RPMs and with stiffer springs often used in modified engines. They mount on a durable shaft system, ensuring stability and consistent geometry.

This system is designed to fit a wide range of Chrysler, Dodge, Plymouth, and even Bristol vehicles from the late 1950s through the late 1970s. While these are a performance upgrade, they are well-suited for many street applications where improved valvetrain stability and durability are desired. Ensure you are replacing a shaft-mount rocker system, as these are not a direct replacement for stud-mount rockers.