It depends heavily upon the cam. COME might be your best help on this.

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If we all had the same (good) taste, who would buy all the Fords?

brendon, the heads arent the limiting factor with hi compression.
its the head Gaskets and piston side skirts(pinging) which will limit you as you increase compression.

Good thing you live near the airport, you could bump it upto 11:1 and run Av gas.?

look into Copper shim head gaskets,
or, O - ring gaskets to run with a hi quality felpro gasket.

If you do go for hi comp like 10.5, try and keep the piston as close as possible to Zero deck height, and take less off your heads.
This will create greater turbulance in the chamber, particularly around the valves.
Not only that, your inlet manifold has a much better change of sealing because it is bedding onto the original V shape it was designed for between inlet manifold and head ports.

WANTED:
-2 14 x 9.25 CSA style Centrelines.
-2 x 15 x 8 Dragway centrelines

Edited by user Saturday, 16 May 2009 5:37:41 AM(UTC)  | Reason: Not specified

Deck height is on the block - it can be machined down as well as facing the heads. This will bump up the c/r but remember the intake manifold will have to also be machined to suit.

Cometic make great mls head gaskets too.


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Why are you reading this, you should be looking up there^^
- HJ turbotonner looks and goes like a sneezing rhino on heat! -