Rocker Arm Trunnion Kit LS1/LS2/LS3 w/1.7 Rocker

The Rocker Arm Trunnion Kit LS1/LS2/LS3 w/1.7 Rocker from Straub Technologies is a precision valvetrain component designed for high-performance Chevrolet LS-series engine builds. This kit is essential for serious performance applications where factory rocker arm geometry limits horsepower and RPM capability. Whether you're constructing a street engine, track car, or a forced-induction platform, this trunnion kit enhances your valvetrain to unlock the full potential of your engine.

The 1.7 rocker arm ratio offers a mechanical advantage that increases valve lift and duration, thereby improving volumetric efficiency and broadening the power band. Designed with tight tolerances, these kits minimize valve lash variability and ensure consistent valve event timing across all eight cylinders. The trunnion assembly supports the rocker arm pivot point, and its precision manufacturing is crucial to prevent deflection or play, which can lead to erratic valve action and decreased combustion efficiency.

Enthusiasts upgrading to performance cam profiles, spring packages, or increasing boost levels will experience immediate benefits from this trunnion kit. Its robust construction is built to maintain structural integrity under extreme acceleration and sustained high-speed operation, which is vital for engine longevity in aggressive applications. Proper installation and valve lash adjustment are necessary to maximize the performance of this high-quality component.