Description
Isky Endurance 9000 valve springs are used by some of your top leading engine builders. Rigorous spintron testing has proven Iskys endurance 9000 series valve springs to be one of the best springs on the market today. Shown here these dual springs with a damper set up at 210 pounds @ 1.900. A great spring for a mild to radical roller cam used in conventional iron, and Edelbrock aluminim headed Olds engines. This endurance spring is 1.550 in diameter.
