5/16in Valve Locks Steel 7 Degree- Single Groove

The COMP CAMS 5/16in Valve Locks Steel 7 Degree with single groove are precision retaining components essential for any high-performance or modified engine build. Valve locks secure the valve spring retainer to the valve stem, preventing catastrophic valve drop during high-RPM operation or aggressive cam profiles. Whether you're building a street performance engine, restoring a classic, or running a race-prepped motor, these hardened steel locks are non-negotiable components that directly impact reliability and engine longevity.

Manufactured from premium steel, the COMP CAMS 5/16in valve locks feature a 7-degree angle geometry that precisely matches modern valve stem tapers and retainer cups. The single groove design provides optimal seating and positive lock-up, preventing rotational slip under valvetrain stress. This 7-degree angle is critical—it ensures the lock's wedging action creates a secure mechanical grip as spring pressure bears down on the retainer, effectively locking the valve in place even under extreme load or high-lift camshaft scenarios where standard locks might fail.

These valve locks are ideal for engine builders, mechanics, and enthusiasts upgrading to performance cam profiles or increasing spring pressures beyond stock specifications. The 5/16-inch diameter accommodates most small-block and mid-block applications across domestic and import platforms. Always verify valve stem diameter and retainer cup compatibility before installation. Proper seating requires correct valve spring pressure and retainer geometry—mismatched components can result in inadequate preload and valve float at high RPM.