Scorpion Race Series Rocker Arm 7/16" Stud Mount 1.73 Ratio Full Roller - Big Block Ford/Cleveland/Modified - Each 55-56 Chevrolet: Silverado 3500 01 -

Chevrolet: Silverado 3500 01 - 18 6 L Engine

and MSD Ignitions (ballast resistor required for points)•  100:1 turns ratio and lower primary resistance produce high voltage output

Clamp fastens around a 1-1/2" door bar

1964-1986 Ford Mustang

Scorpion Race Series Rocker Arm 7/16" Stud Mount 1.73 Ratio Full Roller - Big Block Ford/Cleveland/Modified - Each 55-56 Chevrolet: Silverado 3500 01 -Product Description: Rocker Arm Race Series 7 16 in Stud Mount 1. 73 Ratio Full Roller Aluminum Blue Anodized Big Block Ford Cleveland Modified Sold Individually Scorpion is an authority in racing engine parts and the leading manufacturer of rockers in the U. S. Every product Scorpion makes is dyno tested and race proven before it is ever offered for sale to the public. The result of this is top quality race winning parts and very satisfied customers.