COMP Cams Shaft Rocker BBC BDX B-Dke/Drt B

If you're building a high-performance Big Block Chevrolet engine, especially one with 18-degree Brodix Big Duke or Dart Big Chief cylinder heads, this COMP Cams Shaft Mount Rocker System is a serious upgrade for your valve train. This system is designed to transfer power from the camshaft to the valve more efficiently than traditional stud-mounted rockers. By using a horizontal shaft as the fulcrum instead of a stud, the entire rocker arm assembly becomes much more rigid. This added stiffness means less flex under load, which translates directly to improved valve train stability and, ultimately, more horsepower reaching the crankshaft.

The construction here is top-notch, using a strong 2024 aluminum for the rocker arms themselves, paired with a hardened 8620 steel shaft. This combination is built to withstand the intense forces found in racing applications. COMP Cams utilizes advanced computer technology in their design process and backs it up with real-world testing by experts across various racing disciplines. This isn't just about making more power; it's about making that power reliably and consistently, even under extreme conditions.

This kit is specifically configured with a 1.7 ratio for BBC engines that use 18-degree cylinder heads like the Brodix Big Duke or Dart Big Chief. The increased ratio helps to open the valves further and for a slightly longer duration, contributing to better cylinder filling and scavenging. When you're pushing the limits of an engine, the stability and precision of your valve train are critical, and this shaft mount system addresses that directly.