LS. 660 Dual Valve Spring Kit Steel Retainers 4.8 5.3 6.0 LS1 LS2 LS3 SK001 USA

660 Dual Valve Spring Kit Steel Retainers 4.8 5.3 6.0 LS1 LS2 LS3. 660 Lift Dual Spring Kit for LS engines using stock rocker arms. Locators for Stock Guides. This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA, […]