Eng Rocker Arm Shaft

Made from SAE 8620 chromemoly Steel - Rocker bodies are heat-treated to obtain maximum strength and stiffness - Unique oil system lubricates all critical parts for long lasting service. - Big Block Chrysler system (part #1321-16) includes a special adjuster which allows the use of conventional ball ended pushrods.

Additional Information

The 1077-2 shaft pair replaces the shafts that come with our 1621 Chrysler 383-440 B/RB shaft rocker system.

Part Type

Engine Rocker Arm Shaft

Product Overview

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 and arched, weblike design deliver increased strength and rigidity while reducing moment of inertia
• Withstand valve spring pressures up to 850 lbs.
• Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
• Increased retainer and valve spring clearances allow use of large diameter springs, retainers and +.050" locks without clearance or fitment issues
• Feature oversized trunnions, precision-sorted needle bearings and hardened roller tips

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Product Details

Product Downloads

#	Document Type	Download
1.	Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Rocker Shafts For 1621 Rockers

For maximum performance and long life, we recommend COMP Cams rocker arm shafts. Made from hardened chrome or chromoly steel, they're heat-treated to obtain maximum strength and stiffness. A unique oil system lubricates all critical parts for long lasting service. These rocker arm shafts are designed to be used with various types of COMP Cams rocker arms, depending on your automotive needs.