COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Chevy (Set of 16) 016440NRNR 1979-1993 GMC K2500 Suburban

1979-1993 GMC K2500 Suburban

It pulls low and straight back

Same as Heat Sheath but with the added convenience of hook & loop closure design along the open edges

With Gibson non-packed mufflers you can guarantee a consistent level of sound and performance quality for the duration of your vehicles lifetime

000 RPM when used with 8364 MSD HEI Module

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Chevy (Set of 16) 016440NRNR 1979-1993 GMC K2500 SuburbanThe Ultra Pro Magnum Roller Rocker Arms for Chevy V8 265 400 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. 6 ratio. The 8650 chromemoly material and arched, web like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing