COMP Cams 1634-1 - Rocker Arm,FS/FW 1.6 3/8 Ult.Pro Mag S/A

COMP Cams Ultra Pro Magnum Roller Rocker Arm, 1.6 Ratio, 3/8" Stud Diameter, Self Aligning for Small Block Ford, Single Piece The Ultra Pro Magnum Roller Rocker Arms for Small Block Ford Self Aligning 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 3/8" 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 the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring oversized trunnions, precision-sorted needle bearings and hardened roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues. For Small Block Ford Self Aligning applications, 1.6 ratio, 3.8" studs; Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while reducing moment of inertia; Unique black oxide exterior finish helps prevent corrosion, thus increasing durability; Optimized retainer and valve spring clearances allow use of most diameter springs, retainers and +.050" locks without clearance or fitment issues; Feature oversized trunnions, precision sorted needle bearings and hardened roller tips