Probe Industries Shaft Rocker Systems for Big Block ChevyÍs

Probe is excited to release the new Shaft System for Big Block Chevrolet engines. They 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.
Note: Drilling of 1/8 inch diameter dowel holes in your cylinder head is required. Drilling fixture is included with the Shaft System purchase.
Fits Canfield, Pro Top Line, Edelbrock, Pro Comp, Brodix & Dart heads cylinder heads using .250 long intake and .100 long exhaust valves. It fits Canfield heads with no modifications and easily installs on most others using the included drilling fixture. The Probe Shaft Rocker System is designed for cam lifts of slightly over .700 lift. Offset bases are available for lifts over .700.