COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Chevy / GM V6 CALCSC6125DS2A2AX 1955-1959 GMC S370

1955-1959 GMC S370

Trick Spindle Nut Kit made from lightweight aluminum is adjustable with a positive locking nut

6 x 7 x 13 in Legs

1976-1977 Pontiac Sunbird

Plastic Countersunk Washers 1/4" x 1" Orange

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Chevy / GM V6 CALCSC6125DS2A2AX 1955-1959 GMC S370The 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