Spring Shims .060x.520 IDx1.300 OD GM LS Series

The COMP CAMS Spring Shim .060x.520 IDx1.300 OD GM LS Series is a vital component for LS engine builders and performance enthusiasts who require precise valve spring control. These shims are designed to be placed beneath the valve spring to achieve the correct installed height, which is crucial for maintaining spring preload and preventing valve float.

This .060-inch thick shim features a .520-inch inner diameter (ID) and a 1.300-inch outer diameter (OD), making it compatible with factory LS cylinder head spring pockets and various aftermarket spring combinations. Manufactured from hardened steel, these shims are built to withstand the high pressures and temperatures associated with high-RPM operation, ensuring dimensional stability.

COMP CAMS shims are essential for LS engine builders working on everything from street applications to race engines. Proper shim selection allows for the adjustment of installed height specifications, which is particularly important when using stiffer aftermarket springs or custom cam profiles.