Valve Spring - Sure Seat - Single Spring / Damper - 1.130 in Coil Bind - 1.460 in OD - Big Block Ford - Set of 16

Valve Spring Kit - Dual Spring - 425 lb/in Rate - 0.950 in Coil Bind - 1.465 in OD - Locks / Chromoly Retainers - Kit

Valve Spring - Dual Spring - 399 lb/in Spring Rate - 1.080 in Coil Bind - 1.470 in OD - Locks / Chromoly Retainers - Kit

Valve Spring - Single Spring / Damper - 415 lb/in Spring Rate - 1.140 in Coil Bind - 1.476 in OD - Set of 12

Valve Spring - Single Spring / Damper - 355 lb/in Spring Rate - 1.150 in Coil Bind - 1.485 in OD - Set of 16

Valve Spring Kit - Single Spring / Damper - 355 lb/in Rate - 1.150 in Coil Bind - 1.485 in OD - Locks / Chromoly Retainers - Kit