HR Valve Spring Kits - GM LS - 1.034

The PAC Racing Springs HR Valve Spring Kit for GM LS engines with a 1.034" seat diameter is designed for builders and enthusiasts who require reliable performance at high RPMs. This kit is particularly beneficial for those pushing the limits of their LS engines, whether for street performance or dedicated racing applications.

Engineered to replace OEM valve springs, this kit features dual-spring designs with optimized wire diameter and coil count to prevent valve float and maintain consistent spring pressure. The springs are tailored for high-RPM operation, ensuring that they can handle aggressive cam profiles without compromising performance.

Ideal for anyone rebuilding LS heads for boosted applications or high-performance builds, this valve spring kit is compatible with various GM LS engine variants. It is essential to use a spring compressor tool for installation, ensuring a proper fit and function within the engine.