The Ultra Pro Magnum™ Roller Rocker Arms not only meet but surpass the esteemed standards of the original Pro Magnums™. Crafted from 8650 chromemoly material with an arched, web-like design, these rocker arms offer heightened strength and rigidity while simultaneously reducing the moment of inertia and optimizing dynamic balance. The unique black oxide exterior finish serves to prevent corrosion and enhance overall durability. Featuring oversized trunions, precision-sorted needle bearings, and hardened roller tips, these rocker arms are designed for the utmost in performance and dependability. Optimized retainer and valve spring clearances ensure compatibility with most diameter springs, retainers, and +.050" locks without any clearance or fitment issues.
Chrysler 383-440 Big Block - Shaft Mounted - 1.5 Ratio*
- Investment cast 8650 chromemoly body and arched, web-like design enhance strength and rigidity while minimizing the moment of inertia.
- The unique black oxide exterior finish prevents corrosion and increases overall durability.
- Optimized retainer and valve spring clearances ensure compatibility with most diameter springs, retainers, and +.050" locks without any clearance or fitment issues.
- Feature oversized trunions, precision-sorted needle bearings, and hardened roller tips.
- Lifetime Warranty ensures rocker bodies against breakage for life, suitable for applications with up to 850 lbs of open spring pressure. *Requires ball/ball style pushrods.
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
