COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy (Set of 16) RG40003XL 1988-1991 GMC C1500

1988-1991 GMC C1500

1968-1972 Chevrolet El Camino

75 in Compressed / 19

a large fine thread adjustment nut with a built-in detent and two 1/2” rod ends for mounting

1980-1985 Buick Riviera

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy (Set of 16) RG40003XL 1988-1991 GMC C1500The Ultra Pro Magnum Roller Rocker Arms for Chevy V8 396 454 applications not only live up to the lofty standards of the original Pro Magnums, but they also take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 7 16" stud diameter and 1. 7 ratio. The 8650 chromemoly material and arched, web like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing