5/16 Valve Locks - 7 Degree GM LS Steel

The 5/16 Valve Locks - 7 Degree GM LS Steel from PAC Racing Springs is an essential component for serious LS engine builders and performance mechanics. These valve locks are crucial for retaining valve spring retainers on the valve stem, preventing valve float and potential engine failure under high RPM and boost conditions. They are designed for a variety of applications, including stock street engines and high-performance builds.

Manufactured from hardened steel, these valve locks are engineered to withstand extreme valve spring pressures and repeated acceleration cycles without deformation. The 7-degree angle is specifically designed to match GM LS cylinder head geometry, ensuring a secure fit that minimizes the risk of valve drop. This precision engineering helps maintain consistent spring load and prevents the retainer from sliding down the valve stem.

These valve locks are ideal for anyone assembling an LS engine that exceeds stock spring pressures or targets high RPM capabilities. They are sold individually, making it easy to purchase the exact quantity needed for your engine build. Whether for street performance or drag racing applications, these valve locks are a critical component for reliability and longevity.