PAC Racing Springs 1200 Series Ovate Beehive Valve Spring - 340 lb/in Spring Rate - 1.100 in Coil Bind - 1.072 in / 1.307 in OD - GM LS-Series 1AA0220BG1T or fiber optic cable needed

or fiber optic cable needed

Vacuum Pump Vane Kit

550 in Rectangle Port

AM Calipers

Replaces OE 5357971

PAC Racing Springs 1200 Series Ovate Beehive Valve Spring - 340 lb/in Spring Rate - 1.100 in Coil Bind - 1.072 in / 1.307 in OD - GM LS-Series 1AA0220BG1T or fiber optic cable neededProduct Description: Valve Spring 1200 Series Ovate Beehive Spring 340 lb in Spring Rate 1. 100 in Coil Bind 1. 072 in 1. 307 in OD GM LS Series Sold Individually 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