1.560 Spring Cups

Valve Spring Locator - Inside - 0.062 in Thick - 1.570 in OD - 0.570 in ID - 0.835 in Spring ID - Steel - Black Oxide - Set of 16

1.580 Dual Valve Springs - Polished

Valve Spring - NexTek - Dual Spring - 535 lb/in Spring Rate - 1.170 in Coil Bind - 1.580 in OD - Polished - Set of 16

1.580 Spring Cups

Valve Spring Locator - Outside - 0.062 in Thick - 1.687 in OD - 0.570 in ID - 1.580 in Spring OD - Steel - Black Oxide - Set of 16

1.580 Spring Retainers 10 Degree - Tool Steel

Valve Spring Retainer - 10 Degree - 1.150 in / 0.825 in OD Steps - 1.580-1.610 in Dual Spring - Plus 0.100 in - Steel - Natural - Set of 16

1.610 NexTek Dual Valve Springs

Valve Spring - NexTek - Dual Spring - 546 lb/in Spring Rate - 1.220 in Coil Bind - 1.610 in OD - Set of 16

1.610 Spring Cups - .570 ID

Valve Spring Locator - Inside - 0.062 in Thick - 1.610 in OD - 0.570 in ID - 0.720 in Spring ID - Steel - Black Oxide - Set of 16

1.620 Dual Valve Springs - Polished

Valve Spring - NexTek - Dual Spring - 500 lb/in Spring Rate - 1.200 in Coil Bind - 1.620 in OD - Polished - Set of 16

1.625 Spring Cups

Valve Spring Locator - Outside - 0.062 in Thick - 1.740 in OD - 0.635 in ID - 1.625 in Spring OD - Steel - Black Oxide - Set of 16

1.625 Valve Spring Locators

Valve Spring Locator - Inside - 0.062 in Thick - 1.570 in OD - 0.567 in ID - 0.860 in Spring ID - Steel - Black Oxide - Set of 16

1.640 Dual Valve Springs

Valve Spring - NexTek - Dual Spring - 647 lb/in Spring Rate - 1.070 in Coil Bind - 1.640 in OD - Set of 16

1.640 NexTek Dual Valve Springs

Valve Spring - NexTek - Dual Spring - 647 lb/in Spring Rate - 1.070 in Coil Bind - 1.640 in OD - Polished - Set of 16

1.640 NexTek Valve Springs

Valve Spring - NexTek - Dual Spring - 604 lb/in Spring Rate - 1.150 in Coil Bind - 1.640 in OD - Set of 16