PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 673 lb. - 0.971 in Coil Bind - 1.274 in OD (Set of 16) QRP57-479-50 Supplied with a steel distributor

Supplied with a steel distributor gear

Will not accept stock Motorcraft spread-bore carburetor or fit heavy-duty 361 & 391 c

One of the most advanced and popular compounds available from PFC

filler neck

060 in / 1

PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 673 lb. - 0.971 in Coil Bind - 1.274 in OD (Set of 16) QRP57-479-50 Supplied with a steel distributorProduct Description: Valve Spring 1300 Series Drag Race Dual Spring 673 lb in Spring Rate 0. 971 in Coil Bind 1. 274 in OD Set of 16 Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and increasing