1.465 Dual Valve Spring Kit w/Damper

The 1.465 Dual Valve Spring Kit w/Damper from HOWARDS RACING COMPONENTS is a precision-engineered valve spring assembly designed for high-performance racing engines that demand reliable valve control and extended rpm capability. Built for serious engine builders and race teams, this dual-spring configuration provides the stability needed in competitive applications where valve float prevention and consistent lift characteristics are non-negotiable. Whether you're assembling a circle-track engine, bracket racer, or street performance build, this kit addresses the core requirement of maintaining valve timing integrity under sustained high-load conditions.

This valve spring kit features a dual-spring design with a 425 lb/in spring rate and a 0.950 inch coil bind specification, delivering the pressure curve necessary to control valve motion across the entire engine speed range. The 1.465 inch outside diameter allows for compact installation in modern cylinder heads while maintaining adequate spring seat contact. The kit includes chromoly steel retainers and locks—materials chosen for their superior strength-to-weight ratio and resistance to fatigue failure common in racing environments. The integrated damper minimizes harmonic vibration in the spring stack, reducing the risk of spring surge that can lead to premature wear or catastrophic failure during maximum effort runs.

This kit is ideal for engine builders working with aluminum or iron cylinder heads in small-block and mid-displacement applications where space constraints and performance demands overlap. Installation requires proper valve spring seat tools and precision machining to ensure correct installed height and preload—critical factors that directly impact engine reliability and power delivery. Verify your cylinder head bore size and valve stem diameter compatibility before ordering, as proper fitment is essential to the kit's performance and longevity. Chromoly retainers and quality locks are pre-assembled, simplifying the installation process and reducing assembly errors in the shop.