1.550 Spring Cups Valve Spring Locator - Outside - 0.062 in Thick - 1.680 in OD - 0.577 in ID - 1.550 in Spring OD - Steel - Black Oxide - Set of 16

1.550 Dual Valve Springs - (16) Valve Spring - 1200 Series - Dual Spring - 663 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Drag Race - Set of 16

1.550 Dual Valve Springs (16) Valve Spring - 1300 Series Drag Race - Dual Spring - 1015 lb/in Spring Rate - 1.230 in Coil Bind - 1.550 in OD - Set of 16

1.550 Dual Valve Springs - (16) Valve Spring - 1300 Series Drag Race - Dual Spring - 644 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Set of 16

1.550 Dual Valve Springs - (16) Valve Spring - 1200 Series Circle Track - Dual Spring - 550 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Set of 16

1.550 Dual Valve Springs - (16) Valve Spring - 1200 Series - Dual Spring - 644 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Drag Race - Set of 16