Isky Cams Endurance Plus„¢ Dual Valve Springs W, Damper (16) - 1.530" O.D. - 420 lbs., "Rate - 1.160" Coil Bind Scott Drake Recommended for Single Exhaust Systems

Recommended for Single Exhaust Systems

Steering Shaft is 14" Long

Fuel Block

Power Trunk Popper Kit

aggressive sound outside and inside the vehicle

Isky Cams Endurance Plus„¢ Dual Valve Springs W, Damper (16) - 1.530" O.D. - 420 lbs., "Rate - 1.160" Coil Bind Scott Drake Recommended for Single Exhaust SystemsThe Endurance Plus series of valve springs utilizes a specially processed Tool Room Material outer spring for increased endurance reliability beyond the "SP" series. Endurance Plus springs are designed for late models, modifieds, etc. , and are Spintron Test Proven up to 8400 rpm for 850 racing miles. As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of