COMP Cams 1478-16 Trunnion-Upgraded Ratio Rocker Arm Set For Gm - 1.7 Ls3

The COMP Cams 1478-16 Trunnion-Upgraded Rocker Arm Set delivers enhanced durability and performance for GM LS3 engines. Featuring a 1.7:1 ratio, these rocker arms provide increased valve lift compared to stock components, optimizing airflow for improved horsepower and torque output.

Key Features:

• Upgraded trunnion bearing design for superior strength and reliability
• 1.7:1 rocker ratio increases valve lift without changing camshaft specifications
• Precision-engineered for GM LS3 engine applications
• CNC-machined from high-strength materials for dimensional accuracy
• Complete set for all 16 valves (8 intake, 8 exhaust)
• Improves engine breathing and performance across the RPM range

The trunnion upgrade addresses the weak point found in stock LS rocker arms, featuring a reinforced bearing system that eliminates premature wear and failure. This makes the 1478-16 set ideal for performance street engines, high-RPM applications, and boosted combinations where reliability is critical. Direct bolt-on installation uses factory valve springs and retainers with most stock and mild performance camshafts.