COMP Cams Max-Lift Bushed Shaft Rocker System GM

The COMP Cams Max-Lift BSR (Bushed Shaft Rocker) System is a bolt-in shaft rocker arm assembly for GM engines. It increases valve train stiffness, stability and durability. It is a rocker arm and shaft upgrade for builders who want to run more aggressive camshafts and higher valve lift.

Key Features:

• Bushed shaft design: Rocker arms mount on a single rocker shaft. This reduces the deflection found in single-bolt rocker mounting designs.
• Tri-layer bushings: Thin tri-layer rocker arm bushings reduce deflection. They also eliminate the high Hertz loading that can occur with needle bearing rockers.
• Plasma nitrided shafts: Each rocker shaft is plasma nitrided. This adds durability, even with aggressive solid roller valve trains.
• Improved geometry: The design keeps the rocker pad and valve tip parallel through the contact sweep. Rocker-to-valve stem geometry is refined for long-term durability.
• Supplementary oiling provision: Threaded ends on the rocker shafts allow for supplementary pressurized oiling.
• Bolt-in installation: The system is built for easy installation. It needs no machine work.

More of the camshaft's lobe lift reaches the valve instead of being lost to deflection. As a result, a given cam can perform like a slightly larger one. The added stability supports higher-lift, more aggressive cam profiles. Choose the child item that matches your cylinder head design.