5/16 Valve Locks - Mini 8

PAC Racing Springs 5/16 Valve Locks - Mini 8 are precision-engineered components designed for high-performance engine builds and race applications. This set of 16 locks features a specific 8-degree angle designed for 5/16-inch valve stems, ensuring proper valve control in demanding conditions. These locks are essential for engine builders, performance enthusiasts, and race teams working with small-block V8s, LS engines, or other platforms requiring 5/16-inch stem components.

Manufactured from steel with a black oxide coating, these valve locks provide corrosion resistance and consistent performance across extended engine operation. The 8-degree angle specification is critical for maintaining proper valve seat contact and preventing valve float during high-RPM operation. The fixed height increase of 0.050 inches allows builders to optimize valve train geometry when working with custom heads, upgraded valves, or modified pushrod lengths.

The Mini 8 design fits applications where standard larger locks would cause clearance issues or exceed weight specifications. Whether assembling a street performance engine or preparing for track duty, this set provides the reliability and performance needed for high-stakes racing. With consistent tolerances across all sixteen pieces, these locks ensure uniform performance for any engine build.