Dual Valve Springs - 1.514

The Dual Valve Springs - 1.514 from HOWARDS RACING COMPONENTS represent a purpose-built upgrade for serious engine builders and high-performance enthusiasts seeking reliable valve control under demanding conditions. Supplied as a complete set of 16 springs, these dual valve springs are engineered for applications requiring precise spring rates and consistent lift characteristics across extended RPM ranges. Whether you're building a street performance engine, preparing for weekend track duty, or developing a competition powerplant, these springs deliver the valve train stability necessary to prevent float and maintain accurate valve timing at elevated engine speeds.

At the core of this design is a 348 lb/in spring rate that provides robust control without excessive preload stress on valve stems and seats. The dual spring configuration—featuring an outer and inner spring working in concert—offers superior damping characteristics that reduce valve chatter and harmonic vibration while extending overall spring life compared to single-spring designs. With a 1.150 inch coil bind specification and 1.514 inch outer diameter, these springs integrate seamlessly into factory and aftermarket cylinder heads designed for this specification, ensuring proper seating geometry and load distribution. The engineering behind dual springs allows manufacturers to achieve high spring rates while maintaining the safety margins critical to preventing coil bind contact during maximum valve lift.

These valve springs benefit engine builders, performance shops, and DIY enthusiasts upgrading cam profiles, increasing valve lift, or pushing RPM limits beyond stock parameters. Installation requires precision—springs must be compressed to exact specifications and checked against coil bind clearance before final assembly. Always pair these springs with compatible spring seats, retainers, and locks matched to your specific cylinder head and valve configuration. For optimal results, verify OD and bind measurements against your head's bore diameter and spring pocket depth before ordering; proper fitment ensures years of reliable operation across thousands of heat cycles.