The COMP Cams .660" Lift Dual Spring Kit with Chromemoly Steel Retainers for GM LS features:_x000D__x000D_.660" max lift_x000D_Specifically designed for hydraulic Roller and some Solid Roller Applications_x000D_Kit includes .660" lift dual springs, Chromemoly retainers, valve locks, seats, and Seals_x000D_
