CompCams® GM Cathedral Port Heads Ultra Pro Magnum™ Roller Rockers
CompCams® GM Cathedral Port Heads Ultra Pro Magnum™ Roller Rockers
CompCams® GM Cathedral Port Heads Ultra Pro Magnum™ Roller Rockers


CompCams® GM Cathedral Port Heads Ultra Pro Magnum™ Roller Rockers

Regular price$54.95
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    Compatible: (5.7L/6.0L)

    2004 - 2007 Cadillac CTS-V

    1998 - 2002 Chevy Camaro SS

    1997 - 2007 Chevy Corvette

    2005 - 2006 Chevy SSR

    1999 - 2013 Chevy Silverado

    2006 - 2009 Chevy Trailblazer SS

    1999 - 2013 GMC Sierra 

    2008 - 2010 Saab 9-7X

    1998 - 2002 Pontiac Firebird

    2004 - 2006 Pontiac GTO


    • For LS1/LS2/LS6/4.8L, 5.3L, & Pre '07 6.0L Truck Engines - Cathedral Port Head LS Applications
    • Full Set Of 16 Stud Mount Rockers - Includes Poly Locks - Requires 3/8" Studs & Guide Plates
    • 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

    As LS engines continue to grow in popularity, COMP Cams® has expanded its line of rocker arms to build components specific to LS applications. New Ultra Pro Magnum™ Rockers are made from investment-cast 8650 chromemoly steel, utilize upgraded trunnions and needle bearings over stock and are stronger, stiffer and more durable than the stock parts. They also feature a 1.8 ratio (compared to the stock rockers’ 1.7) and utilize a roller tip instead of a slider. The higher ratio and increased stiffness make these rockers a great option for increasing lift without changing cams. This increased stiffness, along with the upgraded trunnion package and roller wheel, also makes them a perfect choice when running aftermarket valve springs. The rockers are available in a bolt-down design that uses stock rocker stands and in a stud-mount option for customers looking for an adjustable valve train. The stud-mount version is perfect for individuals running mechanical lifters as well. COMP Cams® LS Ultra Pro Magnum™ Rockers Arms are available for LS1, LS2, LS3, LS6 and LS-based truck engines and come in individual sets or kits featuring studs and guide plates. Kits do not include pushrods, but they are available separately.

    • Increased (1.8) ratio & stiffness make rockers a great option for increasing lift w/o changing cams
    • Investment-cast 8650 chrome moly steel body creates components stronger, stiffer & more durable than stock 
    • Increased stiffness, upgraded trunnion & roller wheel make rockers  perfect for aftermarket valve springs
    • Two designs available – bolt-down using stock rocker stands & and stud-mount for adjustable valve trains
    • Available in individual sets or  kits for  LS1, LS2, LS3, LS6 & LS-based truck applications 
    • Limited Lifetime Warranty - So strong that we guarantee the rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure!







    For more than 35 years, the COMP Cams® mission has never changed: to produce the highest-performing products possible, provide customers with superior service, and to lead the industry in technological development. While the COMP Performance Group™ has grown to multiple companies and hundreds of employees, we still retain the competitive spirit and desire to be the very best that has positioned COMP Cams® as the absolute leader in valve train components.


    COMP Cams® has never forgotten that performance is defined by results –both at the track and on the street. We spend thousands of hours working with individuals, teams and companies to ensure that our products provide superior performance and reliability. Whether we’re working with a Pro Stock or Sprint Cup team, or putting thousands of grueling miles on one of our pro touring or street/strip components, we test our products in the same places you do. That’s why we know that every COMP Cams® product will perform to the highest of standards.

    Choosing a camshaft and valve train products isn’t like buying an oil filter. Everything in your valve train is part of a complex interlocking system that needs to perform well as a combination. That’s why we provide expert technical assistance to our customers –free of charge. Our staff of expert technical advisors, backed by a vast inventory of precision-manufactured valve train components -will help you to make sure that you have the right parts for your application

    COMP Cams® is driven by technology. We employ the industry's largest and most highly trained engineering staff, and the most sophisticated manufacturing processes and test equipment in the world. And because of our wide scope of applications, technologies developed for the highest levels of NASCAR and NHRA will find their way into our products for your street machine, too. The integration of research, engineering and development at COMP Cams® is what we call our “Systems Technology” and it consistently proves itself by out-performing the competition.