Howards Cams Engine Valve Spring Kit

Howards Cams Engine Valve Spring Kits: Complete Valvetrain Solutions

When you upgrade a camshaft, the valve springs must keep pace. Weak or mismatched springs can cause float, loss of power, and accelerated wear — which is exactly why Howards Cams engineered their engine valve spring kits as turnkey valvetrain packages rather than piecemeal components. Built by one of performance racing's most trusted camshaft specialists, these kits take the guesswork out of valvetrain assembly by pairing precisely matched springs, retainers, and locks in a single box.

What's Included in a Howards Cams Valve Spring Kit

Every Howards Cams valve spring kit is designed as a comprehensive assembly. Each package includes performance valve springs, precisely matched retainers, and heat-treated valve locks — everything you need to complete a proper valvetrain upgrade without hunting down individual components from multiple sources. Retainers are typically crafted from 4140 chrome moly steel for strength and durability, while valve locks are available in both 7-degree and 10-degree configurations to suit your specific cylinder head requirements.

A Wide Range of Spring Profiles and Configurations

Howards Cams offers their valve spring kits in an impressive variety of configurations to match the demands of different engine builds. Builders can choose from:

• Standard single springs — available in outer diameters ranging from 1.240 in. to 1.550 in., ideal for street performance and mild-to-moderate cam grinds
• Dual springs with dampers — suited for aggressive hydraulic roller and mechanical roller applications, delivering controlled spring pressure even at high RPM
• Beehive and conical profile springs — advanced geometry designs that reduce valvetrain mass and minimize resonance for improved high-RPM stability
• Pacaloy mechanical roller springs — engineered for extreme-duty applications, handling valve lifts up to 0.800 in. and spring rates reaching into the 700+ lbs./in. range

This breadth of options means Howards Cams valve spring kits serve everything from a mild small-block Chevy street rebuild to an all-out race engine. Kits are specifically tailored for popular platforms including Chevrolet small and big block engines, Mopar applications with single-groove valves, and modern LS-based builds.

Engineered to Complement Howards Cams Grinds

Because Howards Cams manufactures both the camshafts and the valve spring kits, there is an inherent design synergy between the two product lines. Builders upgrading with a Howards Rattler camshaft, for example, can select a spring kit specifically validated for that cam's lift and duration profile, eliminating compatibility concerns. This end-to-end approach reflects the brand's Wisconsin-based manufacturing philosophy: precision-designed components built to work together for consistent, repeatable performance.

Whether you're refreshing a street machine or assembling a competition engine, explore the full selection of Howards Cams performance parts or browse all engine valve spring kits to find the right spring rate, outer diameter, and lock configuration for your application.