- CHEVROLET Small Block 265-400ci V8's
- For 3/8" Studs / 1.52:1 Ratio
ULTRA PRO MAGNUM™ Roller Rocker Arms
The Ultra Pro Magnum™ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnum™ Rockers, but they also take stud mount rocker performance, stability and value to a whole new level. The modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance.
Investment cast 8650 chromemoly body & arched, weblike design deliver increased strength & rigidity while reducing M.O.I.
Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
Increased retainer & valve spring clearances allow use of large diameter springs, retainers & +.050" locks w/o clearance or fitment issues
Feature oversized trunnions, precision-sorted needle bearings & hardened roller tips
Withstand valve spring pressures up to 850 lbs.
ALSO AVAILABLE IN A ROCKER/PUSHROD KIT