1.550 Dual Valve Springs

The HOWARDS RACING COMPONENTS 1.550 Dual Valve Springs are precision-engineered high-performance valve springs designed for demanding racing and performance engine applications. With a 1.550-inch outer diameter and dual spring configuration, these springs deliver the sustained lift control and damping characteristics required in high-RPM competition environments. Supplied as a complete set of 16 springs, this product is built to specification for engines requiring consistent valve actuation across all eight cylinders.

The 508 lb/in spring rate provides the stiffness necessary to control valve motion at elevated engine speeds while maintaining proper seat pressure throughout the RPM band. The 1.080-inch coil bind specification defines the maximum compression point before solid contact, a critical dimension for preventing spring coil clash and ensuring predictable valve float margins. This dual-spring design combines a primary outer spring with an inner damping spring, reducing resonance harmonics and extending component life in high-stress racing conditions. The OD of 1.550 inches ensures compatibility with standard cylinder head spring pocket configurations found in many performance and racing builds.

These valve springs target engine builders, race teams, and performance enthusiasts working on competition vehicles where valve control at high RPM is non-negotiable. Whether for circle track racing, drag racing, road course applications, or street performance engines pushed to their limits, proper spring selection is fundamental to reliable valve operation and horsepower delivery. HOWARDS RACING COMPONENTS specializes in valvetrain components engineered to meet the demands of serious motorsport, making these springs an appropriate choice for builders requiring OEM-equivalent or upgrade performance specifications.

Valve spring selection requires precise matching to your specific engine platform, camshaft profile, and target RPM range. Consult detailed engine specifications or work with your engine builder to confirm that the 508 lb/in rate and 1.550-inch OD align with your application before ordering.