T & D Machine Shaft Mount Aluminum Roller Rocker Arm - 1.70 Ratio - Big Block Chevy 21-23945 Includes the Rebel & Models

Includes the Rebel & Models With G/T Package

UMP / IMCA Modified

With the strictest tolerances to insure the highest performance and long life

All MSD Extra Duty Distributor Caps are designed with performance in mind and are molded from high quality

Standard 9-Volt Battery Operation

T & D Machine Shaft Mount Aluminum Roller Rocker Arm - 1.70 Ratio - Big Block Chevy 21-23945 Includes the Rebel & ModelsProduct Description: Rocker Arm Shaft Mount 1. 70 Ratio Full Roller Aluminum Natural Big Block Chevy T&D Machine Products offers the shaft mount Roller Rockers that have become the choice of racers everywhere. T&D Shaft Roller Rocker Arms extruded 2024 aluminum Rocker Arms are CNC machined and have intricate oil galleries built in to direct oil from the pushrod to the shaft bearings and onto the roller tip. Adjuster screws are 7 16" and broached for a