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![Aluminum Stud-Mount Rocker Arms Set Oldsmobile 330, 350, 400, 425, 455; Ratio: 1.65 [Natural Finish]](https://www.jegs.com/images/mini_750/700/746/746-pce261.1117.jpg)
Vehicle Info NeededAluminum Stud-Mount Rocker Arms Set Oldsmobile 330, 350, 400, 425, 455; Ratio: 1.65 [Natural Finish]
Ships on 09/16/2026
Lowest Price GuaranteePCE261.1117 Features:
- Rated for 750 lbs. open spring pressure
- Internal oiling system for long-lasting performance
- SAE 42100 full-complement precision needle and cage roller bearings
- Shims Included: No
- Self-Aligning: No
- Rocker Arm Body Style: Standard
- Rocker Arm Style: Full Roller
Speedmaster's Aluminum Stud Mount Rocker Arms are used around the world by professional racers, engine builders, and hot rod enthusiasts, offering outstanding power and performance advantages for street, strip and track applications. These aluminum stud mount rockers are made from high strength 6061-T6 aluminum extrusions and each piece is precision CNC machined. These are available in various series' for those needing higher spring loads.
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Superstreet Series: Needle bearing fulcrum can withstand valve spring loads up to 320lbs. Ideally suited for use with flat tappet roller cams.
Outlaw Series: A larger needle bearing fulcrum can withstand valve spring loads up to 360lbs. The extruded body has a tensile strength of over 60,000 PSI. Ideally suited for use with Solid / Mechanical flat tappet and Hydraulic Roller Cams.
Sportsman Pro Series: Withstands valve spring loads up to 700lbs. Ideal for professional racers, needing outstanding power and performance advantages.
