COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy (Set of 16) RG40003XL 75 in Compressed / 19

75 in Compressed / 19

2001-2006 GMC Sierra 2500 HD Standard Cab Pickup

3/4 in Smooth Bore to 3/4 in 48 Spline

1980-1985 Buick Riviera

1968-1972 Chevrolet El Camino

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy (Set of 16) RG40003XL 75 in Compressed / 19The 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