Valve Locks - 3/8 CM -050 Installed Height

The Valve Locks - 3/8 CM -0.050 Installed Height by CROWER are precision-engineered components designed for high-performance engine builds where valve train reliability is critical. These locks secure valve springs to the valve stem, preventing unwanted spring separation during aggressive camshaft profiles and extreme RPM operation.

CROWER valve locks feature a machined design optimized for the 3/8-inch stem diameter with a -0.050-inch installed height specification. This compact height is engineered to work with tight spring seat geometry found in modified cylinder heads, allowing builders to maximize spring pressure without binding or clearance issues.

Mechanics and engine builders working with 3/8-inch valve stems—common in small-block and mid-range applications—will find these locks indispensable when upgrading to higher-lift cams or increasing spring rates. Proper installation requires precise measurement to ensure optimal performance and reliability.