PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 673 lb. - 0.971 in Coil Bind - 1.274 in OD (Set of 16) PFM69469 It wires inline on the

It wires inline on the coils 12 volt supply wire where it senses the current going through this wire and converts this information into a 12 volt output signal that most aftermarket tachometers use as a trigger signal

2011-2015 Chevrolet Volt

2-3/8 in Axle Tube

000 RPM when used with 83647 MSD HEI ModuleRecommended for use with MSD HEI Module PN 83647CARB E

1976-1987 Oldsmobile Cutlass Salon

PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 673 lb. - 0.971 in Coil Bind - 1.274 in OD (Set of 16) PFM69469 It wires inline on theProduct 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