5/16 Valve Locks - 10 Degree Titanium

The 5/16 Valve Locks - 10 Degree Titanium from PAC Racing Springs are essential components for serious engine builders and high-performance mechanics focused on precision valve train assemblies. These valve locks effectively secure the valve stem to the retainer, preventing unwanted valve movement under extreme combustion pressures and aggressive valve spring loads.

Constructed from titanium, these valve locks offer an exceptional strength-to-weight ratio and resist thermal cycling that traditional steel locks may experience in high-RPM applications. The 10-degree angle design matches the valve stem groove geometry, ensuring positive engagement and preventing rotation or slippage during valve lift events, which is critical for maintaining consistent lock-to-groove contact.

These valve locks are particularly beneficial for those building naturally aspirated strokers, forced induction applications, or racing engines, where proper valve lock selection is vital for reliability. They accommodate standard valve stem diameters found on most small-block and mid-size displacement engines, making them a versatile choice for various high-performance applications.