Comp Cams Valve Spring Kit - Beehive Spring - 313 lb/in Spring Rate - 1.100 in Coil Bind - 1.055 in / 1.290 OD - Chromoly Retainers / Viton Seal / Steel Valve Locks / Steel Seat - GM LS-Series - Kit-26915CS-KIT--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO