ULTRA PRO MAG RKR KIT, CHRYSLER 3 83-440 1.5

Brand New Ultra Pro Magnum Shaft Mount Rocker Arms Compatible with Chrysler 383-440 Big Block with Shaft Mounted Rocker Arms - 1.5 Ratio (Part #1621-16).

Ultra Pro Magnum Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums. The 8650 chrome moly 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.

Compatible with:   

• Chrysler 383-440 Big Block V8