Includes three sets of shims of different thickness. Use to set “lifter preload” when fitting a new cam.
Shim assortment: 0.015,0.030 & 0.045″
Ideal preload is .020 – .060
ALWAYS CHECK LIFTER PRELOAD WHEN REPLACING A CAMSHAFT, HEADS OR BLOCK.
To set lifter preload correctly please follow this how-to guide
