Head Gasket
05-02-2010, 08:05 PM
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Head Gasket Getting ready to start the build on my '00 SS, and I'm getting down to the final few parts to order. I'll be installing 243's, custom grind, and supporting mods. I was told by a tuner that I'd need to run .030 Cometic head gaskets, and I've done some asking around and had someone else tell me I need to run a .040 gasket because I'd be making my quench too tight with the .030. I'm by no means an "engine builder," but wouldn't he need to know how much the heads have been milled before telling me a .030 gasket will cause my quench to be too tight?
He also said this: "Too thin and pistons out of the hole (as they typically are on stock short-blocks) and you can actually have the piston hitting the head at TDC. Also too tight on the quench can cost you power (.035" or so quench is ideal on these engines, and he's about to put you a tad over .020"). It's a bad idea." Any advice? Thanks in advance!
He also said this: "Too thin and pistons out of the hole (as they typically are on stock short-blocks) and you can actually have the piston hitting the head at TDC. Also too tight on the quench can cost you power (.035" or so quench is ideal on these engines, and he's about to put you a tad over .020"). It's a bad idea." Any advice? Thanks in advance!
05-02-2010, 09:02 PM
#2
milled heads don't effect quench,only chamber size .run the .040 gasket. most people run .050 gaskets.the pistons are .007-.008 out of the hole.the cometic are pricey ,gm mls are under $50.
