SLP Valve Springs, LS1/LS6/LS2 High-Performance .600 Lift (set of 16) SLP's premium-grade Beehive valve springs are intended for use with cams producing up to .600" of valve lift. State-of-the-art winding and heat-treating processes make them an excellent choice for most high-output street and racing applications. NOTE 1: When using an aftermarket camshaft or rocker-arm, please contact SLP for proper compatibility. NOTE 2: These valve springs can be used with stock retainers. Max. Valve Lift O.D. I.D. Installed Pressure Open Pressure Coil Bind .600" 1.290" .885" 130@1.800" 333@1.150" 1.085"