Pac Racing Springs Valve Spring - Hr Series (1) 1.555 Dual Pac-1940-1

Pac Racing Springs Valve Spring - Hr Series (1) Pac-1924-1Valve Spring - HR Series (1)

Pac Racing Springs 1.550 Dual Valve Spring PAC-1225-1Valve Spring - 1200 Series - Dual Spring - 644 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Drag Race - Each

Pac Racing Springs Hr Valve Spring Kits - Dual Gm Ls Pac-Ks15Valve Spring Kit - Dual Spring - 370 lb/in Rate - 1.010 in Coil Bind - 1.290 in OD - Chromoly Retainer - Viton Seal - Steel Seat - GM...

Pac Racing Springs Hr Valve Spring Kits - Dual Gm Ls Pac-Ks16Valve Spring Kit - Dual Spring - 392 lb/in Rate - 1.020 in Coil Bind - 1.304 in OD - Chromoly Retainer - Viton Seal - Steel Seat - GM...