Does anyone know of a valve spring shim that will fit on a stock vortec head ? These will need to have an O.D. of 1.25" to 1.30", and an I.D. of .850" to .880".
The closest ones that I have found are GM p/n 3875916 which is 1.484" x .859, and a Comp shim kit (# 4753 which I've already bought), which has 1.25" x .814" shims.
If I can't find anything else, I'm going to have to increase the I.D. of the ones that I have by small amount. Thanks, Ron,