1.307 Valve Spring - Ovate Beehive (1)

The PAC Racing Springs 1.307 Valve Spring – Ovate Beehive is a premium performance valve spring engineered for GM LS-series engine platforms. This single ovate beehive spring delivers a 340 lb/in spring rate with a 1.100-inch coil bind specification, designed to maximize valve control and rpm stability in high-performance and racing applications where precision engineering directly impacts engine reliability and horsepower delivery.

PAC Racing Springs manufactures this valve spring to OEM-equivalent tolerances using high-quality music wire to ensure consistent performance across extended operating ranges. The ovate beehive design reduces spring surge and harmonics common in conventional coil springs, allowing higher valve float thresholds and more aggressive cam profiles. The 340 lb/in spring rate provides the linear force needed to manage valve timing precision while the 1.100-inch coil bind clearance prevents coil stacking during maximum lift scenarios, critical specifications for LS engine builds pushing higher boost levels or extended rpm bands.

This valve spring is targeted at LS engine enthusiasts building street performance, track, or competition powerplants where stock valve springs limit cam selection and rpm ceiling. Whether paired with aftermarket camshafts in naturally aspirated builds or supporting boosted applications requiring tighter valve control, the 1.307 ovate beehive spring serves as a core component in engine packages where valvetrain stability directly translates to horsepower consistency and durability. Single spring applications require confirming exact fitment specifications for your specific LS variant and cam selection before installation.

PAC Racing Springs holds market authority in LS platform components, offering engineering-grade valve springs for the LS community. Part number PAC-1219 is widely recognized among LS builders and machine shops as a proven direct fit for core LS platforms.