COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Chevy / GM V6 91619059 Girdle design helps prevent over-tightening

Girdle design helps prevent over-tightening and includes mounting hardware

The pickup is

Dual 8-32 Holes

These parts are intended mainly for engines where severe crankshaft deflections cause edge loading of the bearing

1989 Chevrolet R2500 7

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Chevy / GM V6 91619059 Girdle design helps prevent over-tighteningThe next design evolution of the Hi Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision sorted needle