Steel C/M Spring Seats - 1.550 x .730 x .575

The Steel C/M Spring Seats - 1.550 x .730 x .575 from PAC Racing Springs are precision-engineered components designed for builders and mechanics working with custom valve spring assemblies in high-performance and modified engines. These spring seats serve as the foundation for your coil-over or progressive spring package, directly affecting spring preload, installed height, and overall valvetrain geometry.

Manufactured from hardened steel, these spring seats deliver the durability and dimensional stability required in demanding applications where valve float and component failure are not options. The 1.550-inch outside diameter and .730-inch inner diameter with a .575-inch thickness create a compact footprint suitable for small-block and mid-size engine builds where cylinder head space is at a premium.

PAC Racing Springs' reputation for precision tolerances means you can trust repeatable installed heights and consistent spring loads across all cylinders—essential for peak performance and reliability in forced induction or high-RPM naturally aspirated setups. These spring seats are ideal for engine builders, transmission shops, and weekend warriors performing top-end work on Chevy small-blocks, Ford modular platforms, and comparable applications.