Valve Spring Shims for Big Block Wedge Head and GX390 Clones - 0.015" Thick

Valve spring shims for big block GX non-hemi wedge heads. Laser cut from 1075 alloy spring steel, they will also work as a spring seat on aluminum heads. 

Sold in sets of four. 

External diameter - 1.032"/26.21mm

Internal diameter - 0.645"/16.40mm

Thickness - 0.015"