1.564 Dual Valve Springs (16)

The 1.564 Dual Valve Springs from PAC Racing Springs are designed for serious engine builders who demand precision control and reliability in high-performance applications. These springs are ideal for high-RPM environments where stock springs fail to maintain consistent valve control, making them essential for street performance engines, track vehicles, and competition platforms.

Engineered to prevent valve float and sustain repeated cycles without fatigue, these dual valve springs feature a unique configuration that combines an outer primary spring with an inner helper spring. This design allows for precise control of rate and preload while minimizing coil bind risk and enhancing valve seating control, which is crucial for managing the dynamic loads experienced during high-speed operation.

With a 1.564 outer diameter, these valve springs are compatible with standard spring seats across a variety of cylinder head designs, making them a versatile choice for both small-block and mid-sized platforms. Enthusiasts looking to upgrade their engine performance will find that these springs provide the foundation for controlled and repeatable power delivery throughout the RPM range.