Enhance valvetrain stability in your cathedral-port LS build with the CHE LS1 Shaft-Mount Trunnion Kit (CHE‑3430‑SM), now bundled with essential rocker arm bolts for a complete, high-strength upgrade. Specifically made for 4.8L, 5.3L, 5.7L, and 6.0L cathedral-port heads (LS1, LS2, LS6, LQ4, LQ9, L33, LC9), this kit replaces the pedestal-rocker setup with a rigid shaft-mounted system. Included are eight steel shafts, 32 floating bronze bushings, 33 snap rings, and precision rocker bolts. The conversion dramatically reduces lateral deflection, isolates cylinder harmonics, and boosts valve timing control under high RPM, aggressive cam profiles, or boosted applications. Machined to OEM tolerances, this kit ensures durability and performance without compromising fitment—rocker arms are not included.