COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford H77603FXL and increase fuel economy

and increase fuel economy

Each Wing Nut Is Supplied w/A Separate Stud

1991-2003 GMC Sonoma CID 327 GAS RWD

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2014 GMC Sierra 3500 HD 78

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford H77603FXL and increase fuel economyThe 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