GM LS OE Rocker Arm Set 1.8 w/Trunnion Upgrade

The GM LS OE Rocker Arm Set 1.8 w/Trunnion Upgrade from COMP CAMS delivers OEM-quality valve train geometry with modern reliability upgrades for street and mild performance LS engines. Built for enthusiasts and mechanics rebuilding or refreshing GM LS-based platforms, this rocker arm set maintains factory compatibility while introducing a trunnion upgrade that enhances pivot point durability and reduces wear over extended service intervals. Whether you're restoring an original LS engine or assembling a long-block for daily driving, this complete rocker arm package eliminates guesswork and ensures proper valve actuation from intake to exhaust ports.

The 1.8 rocker ratio in this set is engineered to match OEM valve lift specifications while optimizing mechanical advantage for consistent valve timing and duration across the power band. The trunnion upgrade addresses a common wear point in stock LS rocker arms by reinforcing the pivot pin interface, reducing deflection under high RPM loads and extending component life in both stock and mildly modified engine builds. COMP CAMS' precision manufacturing ensures tight tolerances on the rocker body, push rod seat, and valve stem contact surfaces, minimizing noise and promoting even valve actuation across all eight cylinders. This design preserves factory valve train geometry, making installation straightforward for experienced mechanics without requiring additional machine work or custom fabrication.

Engine builders, restoration shops, and LS platform enthusiasts rely on this rocker arm set for LS1, LS2, LS6, and truck-based LS3 engine assemblies where OEM compatibility and reliability are non-negotiable. Installation requires standard valve train tools and torque specifications found in factory service manuals; no special adapters or modifications are needed. The complete set ships ready to install with all eight rocker arms and fasteners included, making this an economical choice for full valve train renewal or selective component replacement during a major rebuild.