GM LS1/2/6 Gen III Dual Spring Upgrade Kits

Designed as a high performance upgrade specifically for GM’s Gen III (LS1, LS2 & LS6) engines. This dual spring upgrade will allow high rev control with better valve train stability. Perfect forhydraulic roller or mild mechanical roller camshafts up to .650” valve lift. These complete kits include dual springs, chrome moly retainers, heat-treated valve locks and small O.D. seals.

Howards Mechanical Roller Lifters for GM Gen III (LS Series)


These “Link Bar” style lifters are specifically designed to work with standard and high lift mechanical roller cam GenIII applications. Allows removal of stock GM lifter tray. Steel alloy bodies with a special enhanced finish. Heat treated stainless steel link bars. Case hardened 8620 rollers fitted with the best bearings and pins. Fully rebuildable. HC-91177