Valve Spring Engine Kit GM LS Series Valve Spring Kit - Dual Spring - 369 lb/in Rate - 1.000 in Coil Bind - 1.290 in OD - Locks / Chromoly Retainer - Viton Seal - Steel Seat - GM LS-Series - Kit

HR Valve Spring Kits - Beehive GM LS Valve Spring Kit - Beehive Spring - 313 lb/in Rate - 1.140 in Coil Bind - 1.290 in OD - Locks / Chromoly Retainer - Viton Seal - Seat - GM LS-Series - Kit

1.540 Valve Spring Set Hot Rod Series w/Damper Valve Spring - Hot Rod Series - Single Spring / Damper - 311 lb/in Spring Rate - 1.200 in Coil Bind - 1.540 in OD - Set of 16

HR Valve Spring Kits - Dual GM LS Valve Spring Kit - Dual Spring - 392 lb/in Rate - 1.020 in Coil Bind - 1.304 in OD - Chromoly Retainer / Locks / Viton Seal / Steel Seat - GM LS-Series - Kit

GM LS Dual Valve Spring Kit .660 DIa. Valve Spring Kit - Dual Spring - 378 lb/in Rate - 1.070 in Coil Bind - 1.295 in OD - Titanium Retainers / Locks / Seals - GM LS-Series - Kit

1.207 Valve Spring Kit GM LS Beehive Design Valve Spring Kit - Ovate Beehive - 340 lb/in Rate - 1.100 in Coil Bind - 1.207 in OD - Locks / Chromoly Retainers - Kit