EFI Head Volume

[Mark Romans]

The stock cast iron head is 58.5?  Whoa, I thought it would have a bigger
chamber than that.  Thanks for the info.

Also quench area is critical in preventing pre-ignition so he would rather
increase the combustion chamber volume than shim the head up.  Thanks again.
Mark
-----Original Message-----
From: Marc Piccioni <mpiccioni at attcanada.net>
To: 'diy_efi at esl.eng.ohio-state.edu' <diy_efi at esl.eng.ohio-state.edu>
Date: Sunday, April 04, 1999 9:46 AM
Subject: RE: EFI Head Volume


>The head cc's should be 58.5 if the heads have not been cut. One possible
>method (depending on how much boost he wants to run) is to use Fel-Pro's
>head save gasket shim, it adds ~0.040" in thickness which roughly
>translates into ~ 0.8 -> 1.0 drop in C.R. This would save a bunch of $$$ on
>AL heads if that is what he would like to do.........
>
>/Marc
>
>----------
>From: Mark Romans[SMTP:romans at pacbell.net]
>Sent: April 4, 1999 12:45 AM
>To: diy_efi at esl.eng.ohio-state.edu; EFI
>Subject: EFI Head Volume
>
>I have a friend who has an 89 Firebird 5.7 w/tpi and a Vortech and he has
>the stock cast iron heads.  (No casting #) and we are trying to determine
>what the stock head combustion chamber volume is.  He wants to go to
>aluminum heads and drop his compression to 8.0-8.5 to one range.  Anyone
>know what the stock cast iron L98 F-Body app combustion chamber CC's are?
>Thanks.  Mark
>
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