COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford H77603FXL Full ball bearing construction

Full ball bearing construction

2014 GMC Sierra 3500 HD 78

Nitrophyl Float

Installation is easy:

LS Streamline

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford H77603FXL Full ball bearing constructionThe Ultra Pro Magnum Roller Rocker Arms for Small Block Ford 289 302 and 351 Windsor 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