COMP Cams Ultra Pro Magnum 1.8 Ratio Rocker Arm for GM LS3 w/ 3/8" Stud for 17 vehicles

< ul>< li> For LS3/L99/L76 - Rectangle Port Head LS Applications</li>< li> Single Stud Mount Rocker - Includes Poly Lock - Requires < a title="Hi-Techâ„¢ Race Rocker Studs - GM Gen III/IV LS Engines" href="{{store url}}catalogsearch/result/?q=4554-16& Category_Code=">3/8" Studs </a>&< a title="Guide Plates - GM LS Flat - 5/16" Pushrod Diameter" href="{{store url}}catalogsearch/result/?q=4854-8& Category_Code="> Guide Plates</a></li>< li>1.8:1 Ratio</li></ul> 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.