160116 Ultra Pro Magnum Roller Rocker Arms Chevy, 1.52 Ratio

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 in. 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.
• Chevrolet small block 265-400ci v8's
• For 0.38 in. Studs / 1.52:1 ratio