CHE LS3 Shaft-Mount Trunnion Kit (CHE-3770-SM) with Rocker Arm Bolts | Fits 6.0L & 6.2L Rectangle-Port LS Engines | LS3 L99 L76 L92 L96 LSA

The CHE LS3 Shaft-Mount Trunnion Kit (Part #CHE-3770-SM) is the ultimate valvetrain upgrade for high-performance GM LS rectangle-port engines. Specifically designed for 6.0L and 6.2L heads including LS3, L99, L76, L92, L96, and LSA, this kit delivers unmatched rocker arm stability under extreme load, high RPM, and aggressive camshaft conditions. This listing includes not only CHE’s premium shaft-mount conversion hardware, but also a set of precision-engineered LS3 rocker arm bolts — eliminating the guesswork and ensuring complete, secure installation. The kit converts traditional pedestal-mount rockers to a full shaft-mount design, reducing deflection and isolating harmonics for consistent valve timing and improved durability. CHE's floating bronze bushings provide smooth rocker travel with minimal wear, while hardened shafts and high-retention snap rings ensure long-term reliability. This kit is a must-have for LS enthusiasts pushing their builds in racing, boosted, or high-stress environments. Rocker arms not included.

• Complete Shaft-Mount System with Rocker Bolts – This kit replaces the stock pedestal mount setup with hardened shafts, bronze bushings, snap rings, and includes GM-spec rocker arm bolts for a full conversion built to handle extreme stress conditions.
• Superior Valvetrain Stability for High RPM – CHE’s shaft-mounted design improves rocker arm alignment and eliminates lateral deflection, enhancing valve timing consistency, throttle response, and long-term engine reliability in aggressive performance builds.
• Built for LS3-Based Rectangle-Port Heads – Compatible with 6.0L and 6.2L GM engines using rectangle-port heads including LS3, L99, L76, L92, L96, and LSA. Designed for 2007+ LS architecture with precision fit and OE-style performance standards.
• Durable Floating Bronze Bushings – Each trunnion shaft features dual full-floating bushings that isolate harmonics per cylinder and reduce wear. Ideal for aggressive camshaft profiles, forced induction, or sustained high-RPM applications.
• Trusted CHE Precision Quality – Manufactured in the USA with aerospace-grade materials, CHE components are trusted by top-tier builders and race teams. This kit is a direct-fit solution designed to outlast and outperform factory setups.