Spring Seat Cup .060 .640 I.D./1.670 O.D.

The Spring Seat Cup .060 .640 I.D./1.670 O.D. from COMP CAMS is a precision valve train component engineered for high-performance engine builds and competitive motorsports applications. This spring seat cup serves as the critical interface between your valve spring and the cylinder head, maintaining precise spring pressure and geometry under extreme RPM and thermal conditions. Whether you're assembling a race engine, restoring a classic muscle car, or upgrading a street performance build, this component is essential for reliable valve control and sustained horsepower delivery.

Manufactured to COMP CAMS' exacting OEM and aftermarket standards, the Spring Seat Cup .060 .640 I.D./1.670 O.D. features a .640-inch inner diameter designed to seat valve springs with precision fit, while the 1.670-inch outer diameter provides optimized contact surface for distributed load transfer to the cylinder head. The .060-inch thickness specification ensures sufficient material strength to resist spring pressure cycles without deflection or failure. This cup works in tandem with your valve spring and damper assembly to control resonance, maintain consistent seat pressure, and prevent valve float at high engine speeds—critical factors in preventing catastrophic valvetrain damage.

Professional engine builders, machine shops, and serious enthusiasts choose this component for small-block and big-block applications requiring OEM-specification or performance-upgrade valve train geometry. Installation requires careful measurement and alignment during cylinder head preparation—the seat cup must sit flush and square to prevent binding or uneven spring loading. Verify compatibility with your specific valve spring diameter and spring seat configuration before assembly, and always install fresh components when rebuilding a cylinder head to ensure maximum reliability and valve life.