Manley 1.580 Diameter Valve Spring Cups - Spring O.D.: 1.580", Cup O.D.: 1.570", Cup I.D.: .570", Wall/Shlder Height: .140", Shlder Dia: .825" - (Set of 16) H765001XS Easily fitted to your helmet

Easily fitted to your helmet

1976-1981 Chevrolet Chevette

5 psi Minimum

1964-1977 Ford Custom 500

Manley 1.580 Diameter Valve Spring Cups - Spring O.D.: 1.580", Cup O.D.: 1.570", Cup I.D.: .570", Wall/Shlder Height: .140", Shlder Dia: .825" - (Set of 16) H765001XS Easily fitted to your helmetManley Spring Cups offer superior performance and reliability and are the choice of many top engine builders. Manley Performance high performance and racing engine parts have been powering winners since 1966. Since our inception in March 1966, Manley Performance Products has been at the forefront of the high performance automotive industry. Founded by gearhead Hank Manley shortly after his graduation from Brown University, our journey began with a