1678-16 Ultra Pro Magnum 1.8 Ratio Roller Rocker Arms Set Pedestal Mount GM 6.2L LS3 LS2

COMP Cams Ultra Pro Magnum Full Roller Rocker Arms 

(note: picture is wrong, rockers come with bolts, not posi locks)

Suits LS2 & LS3 Heads (Rectangle Port)

• For LS3/L99/L76 - Rectangle Port Head LS Applications
• Full Set Of 16 Bolt Down Rockers - Includes Bolts
• 1.8:1 Ratio
• New LS-Specific Ultra Pro Magnum™ Rocker Arms From COMP Cams^® Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift Without The Need To Swap Cams

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 LS3.

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. The COMP Cams Ultra Pro Magnum rocker arms feature a fully rebuildable design, which means that they very well may be the last rocker arms that you ever have to purchase.

Rocker Arm Mounting Style:  Pedestal

Self-Aligning:  No

Rocker Arm Ratio:  1.8

Rocker Arm Style:  Full roller

Rocker Arm Fasteners Included:  Bolts

Notes:  Fits GM LS3/L99/L76 applications using rectangle port cylinder heads. Must use factory type pedestals.