Quote Originally Posted by nitrowarrior
Is this a true rebuild? If so buy the lower comp pistons. Gasket thickness is quite hefty (3/16{.200}) for flame thru depending on how much boost and fuel increase this thing is going to go with.
Yes, I am rebuilding my engine, I have purchased .040 over pistons which are destroked by .010. The destroked pistons compensated for the larger bore and the fact that one will deck the block by at least a few thou.. and so by lowering the pistons in the block, at least we won't be raising the compression ratio.

From my calculations, if I thicken the head gaskets to .085 from the stock .050, my compression drops from 21.3:1 to about 17.9:1
I will be using Cometic head gaskets, so the thickness is not a factor cause they can with stand 80 lbs of boost and I am only shooting for 15-20.