Scorpion Race Series Rocker Arm - 7/16" Stud Mount - 1.80 Ratio - Full Roller - Aluminum - Blue Anodize - Big Block Chevy MGP Caliper Covers Bracket range 1/2" to 4-3/4"

Bracket range 1/2" to 4-3/4"

1998-1999 GMC P3500

Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map

Up to 6 hours at 50% backlight

Scorpion Race Series Rocker Arm - 7/16" Stud Mount - 1.80 Ratio - Full Roller - Aluminum - Blue Anodize - Big Block Chevy MGP Caliper Covers Bracket range 1/2" to 4-3/4"Product Description: Rocker Arm Race Series 7 16 in Stud Mount 1. 80 Ratio Full Roller Aluminum Blue Anodized Big Block Chevy 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. Simply put,