Head gaskets?

[73sbVert]

Hi guys, posted this on the 'other' site, but I guess all the gurus have moved over herre, so I'll give it a shot again!

I'm getting some work done on my heads and reassembling soon and have a couple of questions for the gurus on here!

I have a stock short block (codes: P/n: 397001, appl: CNR) and I plan to put on a pair of 113 L98 alum heads. Just getting a mild port match and polish the chambers, and new hardware installed, adding 1.6" exhaust valves to opened track.

At any rate, my question is, what compression ratio do you expect I might get with stock replacement sized head gasket? And if too high, what thickness should I get to have approx 9.5:1? Don't want to go much higher, but not too low either!

Thanks!
Paul

[Dave]

Not enough info.

Need to know what pistons you have, and what compression ratio they're expected to have with a specific head volume. Or.... what was the compression ratio with those heads and some known piston?

Need to know a starting point in order to work things out.

Regardless, a head gasket change isn't going to change the compression ratio more than about .2-.3. If you're already running premium fuel, go with some thin copper gaskets. They should be fine if the block & heads surfaces are good.