CHE LS3 Shaft-Mount Trunnion Kit (CHE-3770-SM) | For Rectangle-Port 6.0L & 6.2L LS Engines — LS3 L99 L76 L92 LSA L96 LY6 Models

Upgrade your rectangle-port LS engine’s valvetrain with the precision-engineered CHE LS3 Shaft-Mount Trunnion Kit (CHE‑3770‑SM)—designed for 2007 and newer 6.0 and 6.2 L LS platforms. Ideal for LS3, L99, L76, L92, LSA, LY6, and L96 heads, this high-performance kit includes 8 hardened shafts, 32 full-floating bronze bushings, and 33 snap rings. By providing a solid shaft mount for rocker arms, it significantly reduces valvetrain deflection, maintains accurate valve actuation, and isolates harmonics one-cylinder-at-a-time. Manufactured using advanced materials and precision standards, this system is built to thrive under high-load conditions—whether you’re running boosted power, marine duty, or street/strip builds.

• Complete Shaft-Mount Setup – Includes eight shafts, 32 floating bronze bushings, and 33 snap rings—ready to convert your rocker train to shaft mount.
• Rect-Port LS Head Fitment – Engineered for 2007+ rectangle-port LS engines: LS3, L99, L76, L92, LSA, L96, and LY6.
• Tightens Valvetrain Geometry – Firm shaft mounting dramatically reduces rocker movement, increasing valve timing accuracy and improving stability at high RPM.
• Professional-Grade Materials – Hardened shafts and full-floating bronze bushings resist wear and allow smooth rotation under severe load.
• Competition-Proven Durability – Designed for boosted, marine, and street/strip applications—ideal for aggressive, high-power LS builds.