1.061 Valve Springs - Ovate Beehive (16) Valve Spring - 1200 Series - Ovate Beehive Spring - 275 lb/in Spring Rate - 1.040 in Coil Bind - 1.061 in OD - Ford Modular - Set of 16

1.589 Valve Springs - Ovate Beehive (16) Valve Spring - RPM Series - Beehive Spring - 313 lb/in Spring Rate - 1.180 in Coil Bind - 1.589 in OD - Set of 16

1.290 Valve Springs Ovate Beehive (16) Valve Spring - 1200 Series - Ovate Beehive Spring - 313 lb/in Spring Rate - 1.140 in Coil Bind - 1.290 in OD - GM LS-Series - Set of 16

1.445 Valve Springs - Ovate Beehive (16) Valve Spring - RPM Series - Beehive Spring - 370 lb/in Spring Rate - 1.210 in Coil Bind - 1.445 in OD - Set of 16

1.083 Valve Springs (16) Beehive Ovate Valve Spring - RPM Series - Ovate Beehive Spring - 291 lb/in Spring Rate - 0.952 in Coil Bind - 1.083 in OD - Set of 16

1.307 Valve Springs - Ovate Beehive (16) Valve Spring - 1200 Series - Ovate Beehive Spring - 340 lb/in Spring Rate - 1.100 in Coil Bind - 1.307 in OD - GM LS-Series - Set of 16