COMP Cams 1634-1 Ultra Pro Magnum Rocker Arm, Full Roller, 3/8, Each
289 Ford Small Block V8, 302 Ford Small Block V8, 351W Ford Small Block V8, 0.375" Stud Size
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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 trunions, 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.
- Investment cast 8650 chromemoly body and arched, weblike design deliver increased strength and rigidity while reducing moment of inertia
- Withstand valve spring pressures up to 850 lbs.
- Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
- Increased retainer and valve spring clearances allow use of large diameter springs, retainers and +.050" locks without clearance or fitment issues
- Feature oversized trunnions, precision-sorted needle bearings and hardened roller tips
Application1977-80 Lincoln 302
1964-86 Mercury 289-351
1963-95 Ford 289-351
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