Valve Spring Shims 1.625in x .060in

The Valve Spring Shims 1.625in x 0.060in by MANLEY are precision engineered components designed for high-performance engine builds and valve train modifications. These shims are essential for tuners, engine builders, and automotive enthusiasts who demand exact valve spring preload control on both naturally aspirated and forced induction platforms. Whether you're optimizing a street performance engine or preparing for track duty, proper valve spring shimming is critical to maintaining precise seat pressure and preventing float at elevated RPM.

MANLEY's valve spring shims deliver repeatable accuracy with a 1.625-inch outer diameter and 0.060-inch thickness, allowing fine-tuning of spring preload in 0.060-inch increments. Manufactured from hardened steel, these shims resist deformation under sustained pressure and thermal cycling, ensuring consistent performance across thousands of combustion cycles. The 0.060-inch dimension is a critical specification for applications requiring mid-range preload adjustment—thinner than stock but substantial enough to provide meaningful pressure tuning without requiring multiple shim stacks that compromise valve train geometry.

Engine builders working with LS, small-block Chevy, Ford, and Mopar platforms benefit from MANLEY's valve spring shims when transitioning to aggressive aftermarket cams or increasing engine speed limits. Installation involves disassembly of the cylinder head and careful measurement of existing preload; these shims stack alongside OEM shims to achieve target specifications. Compatibility depends on your cylinder head design and spring seating surface diameter—verify your application requires the 1.625-inch diameter before purchase, and always reference manufacturer cam card recommendations for target preload pressure to optimize valve control.