Straub 346-0015 Valve Spring Shims 50-Pack .015" GM LS Engines

The Straub 346-0015 valve spring shims are precision-engineered components designed specifically for GM LS engine builds. Each shim measures .015 inches in thickness and provides accurate valve spring height adjustment for proper valvetrain geometry and performance.

Key Features:

• 0.015-inch thickness for precise spring height adjustment
• 50-piece bulk pack for complete engine builds and shops
• Engineered specifically for GM LS engine applications
• Allows correction of installed spring height after machining or head surfacing
• Essential for maintaining proper valvetrain geometry and spring pressure
• Heat-treated steel construction for durability

Valve spring shims are critical when building performance LS engines, particularly after cylinder head resurfacing or when installing aftermarket valve springs. Proper shimming ensures correct installed spring height, which maintains intended spring pressure and prevents coil bind. These shims install between the cylinder head and valve spring to raise the spring to the proper installed height specification.