Comp Cams ROCKER ARMS, GM LS3 1.8 BOLT D

SKU: 11F55 | MPN:  1678-16
In stock
Sale price$574.45 USD

(16) Ultra Pro Magnum Roller Rockers - Bolt Down - GM 

  • 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 MagnumT 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 MagnumT 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 MangumT 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 chromemoly 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 


Vehicle Fitments:

Year Make Model Submodel
2012 Cadillac CTS 3.6L, 3.0L
2009 - 2015 Cadillac CTS Base, V, Luxury, Premium
2011 - 2014 Cadillac CTS Coupe
2010 - 2015 Cadillac CTS Performance
2013 Cadillac CTS V Luxury
2014 - 2015 Cadillac CTS Vsport, Vsport Premium
2007 - 2014 Cadillac Escalade Base
2009 - 2013 Cadillac Escalade Hybrid
2010 - 2013 Cadillac Escalade Hybrid Platinum
2008 - 2014 Cadillac Escalade Platinum
2011 - 2014 Cadillac Escalade Premium, Luxury
2012 Cadillac Escalade Special Edition
2007 - 2014 Cadillac Escalade ESV Base
2011 - 2014 Cadillac Escalade ESV Luxury, Premium
2008 - 2014 Cadillac Escalade ESV Platinum
2012 Cadillac Escalade ESV Special Edition
2007 - 2013 Cadillac Escalade EXT Base
2011 - 2013 Cadillac Escalade EXT Luxury, Premium
2007 - 2009 Chevrolet Avalanche LTZ, LS, LT, Base
2011 - 2012 Chevrolet Camaro 2SS, 1SS, 1LT
2010 - 2015 Chevrolet Camaro LS
2016 Chevrolet Camaro RS
2010 - 2016 Chevrolet Camaro SS, LT
2014 - 2015 Chevrolet Camaro Z/28
2012 - 2015 Chevrolet Camaro ZL1
2008 Chevrolet Corvette 427 Limited Edition Z06
2013 Chevrolet Corvette 427, LT
2008 - 2013 Chevrolet Corvette Base, Z06
2010 - 2013 Chevrolet Corvette Grand Sport
2011 Chevrolet Corvette Z06 Carbon
2009 - 2013 Chevrolet Corvette ZR1
2009 - 2013 Chevrolet Silverado 1500 Hybrid
2007 - 2013 Chevrolet Silverado 1500 LS, Base, WT, LTZ, LT
2010 - 2013 Chevrolet Silverado 1500 XFE
2014 - 2017 Chevrolet SS Base
2007 - 2009 Chevrolet Suburban 1500 LTZ, LS, LT, Base
2007 Chevrolet Suburban 1500 Z71
2008 - 2009 Chevrolet Tahoe LTZ, Z71, LT, Base, Hybrid, LS
2009 - 2013 GMC Sierra 1500 Hybrid
2007 - 2013 GMC Sierra 1500 SLT, SL, WT, SLE, Denali
2010 - 2013 GMC Sierra 1500 XFE
2007 - 2012 GMC Yukon Base
2010 - 2013 GMC Yukon Denali Hybrid
2007 - 2014 GMC Yukon Denali, SLE, SLT
2008 - 2013 GMC Yukon Hybrid
2007 - 2014 GMC Yukon XL 1500 Denali, SLT, SLE
2008 - 2009 Hummer H2 Base, Adventure, Luxury
2008 - 2009 Pontiac G8 GT, Base
2009 Pontiac G8 GXP

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