Rocker Arm - Ultra Pro Magnum - 3/8 in Pedestal Mount - 1.80 Ratio - Full Roller - Chromoly - GM LS-Series - Set of 16

Additional Information

Fits Cathedral port heads

Engine Rocker Arm

New LS-Specific Ultra Pro Magnumâ„¢ Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift without The Need To Swap Cams. As LS engines continue to grow in popularity, COMP Cams has expanded its line of Rocker arms to build components specific to LS Applications.

For LS1/LS2/LS6/4.8L, 5.3L, and Pre '07 6.0L Truck Engines - Cathedral Port Head LS Applications
Full Set Of 16 Bolt Down Rockers - Includes Bolts
1.8:1 Ratio

Additional Information

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.8 ratio, these rockers fit non-adjustable pedestal mount LS1/2/6.

Part Type

Engine Rocker Arm Kit

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

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1.	Catalog

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Reference Information

Rocker Arms, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Pedestal Mounting, Chevy, Set of 16

Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.