COMP Cams Rockers CB 1.7 7/16in Ultra Pro

When you're rebuilding the top end of your engine, especially for a Chevrolet Big Block like those found in a classic Chevelle, Camaro, or Corvette, the rocker arms are critical components. These COMP Cams Ultra Pro Magnum XD rocker arms are designed to handle the demands of performance builds, offering a 1.7 ratio that works with your camshaft's lift profile to optimize valve timing and airflow.

These rockers are well-built from strong 8650 steel, a material chosen for its durability and ability to withstand the stresses of engine operation. They feature a unique machined billet pushrod seat insert, which adds exceptional durability right where the pushrod contacts the rocker. COMP Cams also incorporated precision-sorted needle bearings and hardened roller tips. These work together to better distribute the load across the valve tip and reduce friction, which means less wear and a longer service life for your engine's valvetrain. They're also designed to work with most common spring and retainer diameters, and can handle up to 1,000 lbs of spring pressure, making them a solid choice for many performance applications.

What's great about these is that they are fully rebuildable, meaning you can service them down the road if needed. The XD design itself benefits from advanced engineering analysis, focusing on improving strength and stiffness for endurance, drag, and circle track racing scenarios. If you're looking for a robust and reliable rocker arm upgrade for your Chevrolet Big Block, these COMP Cams offer a well-made option with features designed for longevity and performance.