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

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

Exhaust Valve - 1.615 in Head - 8 mm Valve Stem - 5.250 in Long - Sodium Filled - GM LS-Series - Each

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

Valve Spring Retainer - 500 Series - 10 Degree - 1.215 in / 0.865 in / 0.630 in OD Steps - 1.620 in Triple Spring - Titanium - Set of 16

Valve Spring - 1200 Series Drag Race - Dual Spring - 629 lb/in Spring Rate - 1.100 in Coil Bind - 1.625 in OD - Set of 16