T & D Machine Shaft Mount Aluminum Roller Rocker Arm - 1.70 Ratio - Big Block Chevy 21-23945 Standard 9-Volt Battery Operation

Standard 9-Volt Battery Operation

UMP / IMCA Modified

increased flow

Crate Engine

Includes the Rebel & Models With G/T Package

T & D Machine Shaft Mount Aluminum Roller Rocker Arm - 1.70 Ratio - Big Block Chevy 21-23945 Standard 9-Volt Battery OperationProduct 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