Dual Valve Springs - 1.470

The Dual Valve Springs - 1.470 from HOWARDS RACING COMPONENTS represent a precision-engineered solution for high-performance engine builds and racing applications. Designed for serious enthusiasts and professional mechanics, these dual spring assemblies are essential when pushing an engine beyond stock specifications. Whether you're building a competition motor, restoring a classic with modern performance upgrades, or tuning a street engine for aggressive cam profiles, dual valve springs provide the control and reliability needed to manage valve float and maintain consistent lift across the entire RPM band.

These dual valve springs feature a 399 lb/in spring rate and a 1.470-inch outer diameter (OD), engineered to work with aggressive valve events and higher lift cams that demand superior seating force. The dual spring design—typically comprising an outer and inner spring—distributes load more evenly than single springs, reducing harmonics and extending component life under sustained high-RPM operation. With a 1.080-inch coil bind specification, these springs ensure positive valve closure without coil bind interference, a critical factor when selecting springs for custom cam grinds. This set of 16 springs (one complete cylinder set for most V8 applications) meets the demands of modified engines where stock springs cannot safely control valve motion, particularly in supercharged, turbocharged, or nitrous-assisted builds.

Mechanics and engine builders rely on HOWARDS RACING COMPONENTS springs when matching new camshaft profiles to existing or upgraded cylinder heads. Before installation, verify your specific engine platform, head casting, and valve stem diameter to ensure compatibility with these springs and your chosen valvetrain components. The 399 lb/bin rate suits engines running moderate to aggressive cam profiles; professional dyno testing or consultation with your cam manufacturer ensures optimal pairing. These springs are ideal for street performance, bracket racing, drag racing, and road course applications where valve control directly impacts engine reliability and consistent power delivery.