So I have read here that .806 for the flywheel thickness is still good to go. I measured mine today and it is .606 and need some work. The clutch didn't slip even having oil on it, at least I couldnt tell. What is the minimum you have tried? Is there a shim available?

Do you have the original flywheel?

or I should ask: Is your flywheel original equipment or did someone put in an aftermarket one? I have never encountered that much variation in thickness.

[This message has been edited by Gall757 (edited 06-25-2014).]

I always thought a resurfacing of the flywheel without cleaning up rivet scoring so would only remove .010" each time it was done. Can't imagine with rivet scoring it would be a whole lot more unless done numerous times, or by a hack in the back room.

There are shims available in varying thicknesses. Check Rock Auto, Summit, or your local speed shop.

[This message has been edited by Kevin87FieroGT (edited 06-25-2014).]

I have no idea how to tell if OEM?

If I add a shim should I add enough to get back to .806?

Yes shims will get the spacing right. Go for either the same height or within 20 thousands will be ready to go

Ill just take a guess and say that an OEM will have a GM number on it somewhere.

How and where are you measuring the thickness? Larry

quote Originally posted by LornesGT: Is there a shim available?

We had a good discussion regarding the use shims in my flywheel thread HERE.

[This message has been edited by Patrick (edited 06-26-2014).]