Probes Industries Shaft Rocker Arm Systems for Big Block Chevrolet engines feature lightweight but strong 2024 t-3511 extruded alloy rocker bodies with dual, fully caged Torrington needle roller bearings. Also featured are tool steel nose rollers and axels for smooth long lasting performance. The steel stands are CNC machined and feature locating dowels for precise roller over valve alignment. They are available in 1.7 and 1.8 ratios and fit all stock and aftermarket cylinder heads with stock rocker boss to valve relationship.

Select from the Shaft Rocker Arm Systems below for detailed product specifications.