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) RS004C1513 this raised one-piece guide plate

this raised one-piece guide plate set is designed for Chevrolet 396-454 Big Block engines with 7/16" studs and 3/8" pushrods

lengths only

Includes Mounting Location For Headlight/Wiper Switch

1977-1977 Buick Riviera

High-temperature silicone heating pads externally preheat oil in wet sump oil pans

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) RS004C1513 this raised one-piece guide plateManley 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