Crate Innovations 604 Valve Spring Shim Kit
Due to popular request!
We have assembled valve spring shim kits to accommodate the competitor who services his own valve train.
This kit contains 24 shims, each set of 8 a different thickness.
NOTE: adjusting shims are to be placed under the factory locating shim.
Valve seal must be removed for proper installation.
Shims are color-coded and bagged individually for easy identification.
WARNING: GM minimum installed height specification is 1.780 inches.
Shimming springs less than specification can result in engine damage and/or disqualification of competitor.
Only qualified personnel should attempt this procedure.