1.290 Valve Spring - Ovate Beehive (1)

The PAC Racing Springs 1.290 Valve Spring — Ovate Beehive design is a high-performance valve spring engineered for GM LS-Series engines. With a 313 lb/in spring rate and 1.290-inch outer diameter, this single spring delivers the consistent valve control required for aggressive cam profiles and elevated RPM applications common in LS engine builds.

The ovate beehive configuration reduces overall height while maintaining superior spring force stability across the full valve lift range. With a 1.140-inch coil bind specification, this spring prevents over-compression and maintains predictable valve seating behavior under load. The 313 lb/in spring rate is designed to control valve acceleration and deceleration, critical for preventing valve float at higher RPMs where standard springs fall short. PAC Racing Springs are manufactured to tight tolerances and consistent specifications, ensuring reliable performance across multiple engine cycles.

This spring is ideal for LS engine enthusiasts upgrading to performance or racing cam profiles that demand superior valve control. Whether building a street performance engine or a competition platform, the 1.290 OD ovate beehive spring provides the spring rate and geometry needed to support aggressive valve timing without sacrifice in reliability. Single-spring purchase allows builders to source components individually or refresh existing valve trains with precision-engineered replacements.

LS-Series engine builders recognize PAC Racing Springs as a category standard. The ovate beehive design balances compact profile with maximum spring force, making it a popular choice for high-output builds where space and valve control both matter. Each spring is individually packaged and ready for installation.