EFI Head Volume

[Mark Romans]

I have had several people contact me off list and tell me that the Vet
aluminum head is 58cc and  the cast iron head  (F-body) is 64cc, both L98
engines.
Mark
-----Original Message-----
From: Shannen Durphey <shannen at grolen.com>
To: diy_efi at esl.eng.ohio-state.edu <diy_efi at esl.eng.ohio-state.edu>
Date: Monday, April 05, 1999 7:40 PM
Subject: Re: EFI Head Volume


>I thought the aluminum vette heads and the early powerpack heads were
>the only ones with chambers that small.
>Any others?
>Shannen
>
>Mark Romans wrote:
>>
>> 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
>> >
>> >
>> >
>> >
>> >
>