Isky Cams SP-Series Dual Valve Spring / Damper - 415 lb/in Spring Rate - 1.160 in Coil Bind - 1.530 in OD - Set of 16 Drag Parachute Release Cable Bolts have a 7/16"-20 internal

Bolts have a 7/16"-20 internal thread on one end for use with bolt-on and swiveler spring cups

415 in Bore

Red Line MT-90 75W90 GL-4 Gear Oil Key Benefits:

Side B is AN-04

Isky Cams SP-Series Dual Valve Spring / Damper - 415 lb/in Spring Rate - 1.160 in Coil Bind - 1.530 in OD - Set of 16 Drag Parachute Release Cable Bolts have a 7/16"-20 internalIsky Valve Springs are world famous for their reliability and long life. As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are conducted daily in Isky's new enlarged dyno facility. To properly evaluate and prove the efficiency of Isky racing cams and valve train components, Isky maintains a continuous engine