Isky Cams 1.560 Valve Springs 9985RadValve Spring - RAD-9000 - Dual Spring / Damper - 500 lb/in Spring Rate - 1.200 in Coil Bind - 1.560 in OD - Set of 16
Isky Cams 1.570 Valve Springs 9989RadValve Spring - RAD-9000 - Dual Spring / Damper - 710 lb/in Spring Rate - 1.200 in Coil Bind - 1.570 in OD - Set of 16