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

Pac Racing Springs Valve Springs - Hr Series (16) Pac-1904Valve Spring - Hot Rod Series - Dual Spring - 370 lb/in Spring Rate - 1.010 in Coil Bind - 1.290 in OD - GM LS-Series - Set of 16

Pac Racing Springs Valve Springs - Hr Series (16) Pac-1901Valve Spring - Hot Rod Series - Dual Spring / Damper - 492 lb/in Spring Rate - 1.130 in Coil Bind - 1.540 in OD - Set of 16

Pac Racing Springs Valve Springs - Hr Series (16) Pac-1903Valve Spring - Hot Rod Series - Dual Spring - 391 lb/in Spring Rate - 1.050 in Coil Bind - 1.459 in OD - Set of 16