Valve Spring Shims 50pk .060 GM LS Engines

The Valve Spring Shims 50pk .060 GM LS Engines from Straub Technologies Inc. are essential components for LS engine builders and tuners who need precise valve spring preload adjustment. These shims are designed to help achieve exact spring pressure without the need for new springs, making them ideal for those upgrading LS1 or LS2 engines with aggressive cam profiles. Available in a practical 50-pack, this bulk quantity ensures you have enough shims for your current project and future builds.

Each shim measures .060 inches in thickness, a common specification for fine-tuning applications where marginal adjustments to seat pressure are necessary. By stacking these hardened steel shims beneath the valve spring, you can incrementally increase preload, which is critical for high-revving engines or cam swaps that require higher spring pressure to prevent valve float. This design allows for precise adjustments to achieve the desired pressure curves for optimal engine performance.

LS engine enthusiasts, whether working on street performance builds or full-race applications, rely on these shims when modifying cam profiles or tuning engines beyond stock specifications. Installation requires the removal of the valve spring retainer and seat, making it a task best suited for experienced builders or professional machine shops. These shims provide the reliability and precision needed for serious engine modifications.