COMP Cams Ultra Gold ARC Aluminum Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Gold - Small Block Chevy (Set of 16) 2-Way Radio This tells the ECU which

This tells the ECU which cylinder is cylinder #1 (or the first cylinder in the firing order as entered in the software)

The Bell GP

GM F-Body 1984-92

Moly formula coats surfaces with film that chemically bonds itself to metals

Internal Baffle to Prevent Aeration of Power Steering Fluid

COMP Cams Ultra Gold ARC Aluminum Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Gold - Small Block Chevy (Set of 16) 2-Way Radio This tells the ECU whichThese COMP Cams Ultra Gold Aluminum Roller Rocker Arms with a 7 16" stud diameter and 1. 6 ratio are designed for Chevrolet V8 265 400 applications. The new modern design features of these Ultra Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra Gold Aluminum Rocker Arms are precision CNC machined to strict tolerances. Developed to meet