Edelbrock Sure Seat Valve Springs [Type Non-Rotator | Seat Pressure 138 lbs. | Installed Height 1.800" | Open Pressure 326 lbs. @ 0.600"| O.D. (L) | I.D. (M) | Coil Bind 1.140"] (GM LS1)

Made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. The #5900 Series valve springs are designed for use with OEM valve rotators. Valve Spring Kits are complete kits that contain non-rotator valve springs, valve spring retainers and matching valve stem locks. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.