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Old 03-15-2011, 08:01 PM   #1 (permalink)
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E7TE Heads: Combustion chamber size?

I'm starting to slowly gather parts for an SD to MAF conversion that may include better heads and cam. I can't find this info anywhere, so does anyone know the combustion chamber size on the standard '87-'93 HO E7TE heads? I just want it for reference as I consider different heads.

Thanks...
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Old 03-15-2011, 09:30 PM   #2 (permalink)
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they vary........
if you do a volume check you should be around 63cc
they can be anywhere from 63-65cc
ford states them as 64cc

i have a set i did a cc check on but also decided my engine build in relation to the heads would make it be like breathing out of a straw.

these are not EFI heads but if you want stock cast heads that breath get the early '69 351w heads.

every other are the same size intake and exhaust, just a small difference in cc's on the rest
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Old 03-16-2011, 12:23 AM   #3 (permalink)
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Thanks, Leo, I checked at least a couple dozen websites but couldn't find it. When I did my rebuild, the stock heads looked real good as they were, but since I'm going to do the conversion, I might as well take advantage and make it breathe a little better.
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Old 03-16-2011, 03:45 AM   #4 (permalink)
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This should cover it

Combustion Chamber Volume for Mustang Ford 302

Year……………….Casting #………Combustion Chamber Volume
’79………………………………D9AE-AA.......67.6-70.5
’80-’81…………………………see notes below
’82-’85……………………….E6AE-CA.......67.6-70.5
’86………………………………E6AE-AA...….62.9-65.9
’87-’93, + ’93 Cobra…..E5TE-PA......60.6-63.6
..............................E7AE-AA
..............................E7TE-PA

Note: In 1980-81 Ford introduced a new version of its small block V-8 engine. Displacement of 4.2L had a 3.00" stroke with smaller bore of 3.68". The 302 was still produced for other cars and trucks but was not in the Mustang. The head found on those other 302 engines was the same as in '79.

Ford 302, Explorer and Mustang

Year……………………………………Casting #..............Chamber
……………………………………………………………………………Volume
GT-40 Head
’93 Mustang Cobra…….......F3ZE-AA…………….....60-63cc
’94-’95 Mustang Cobra……..F4ZE-AA………….......60-63cc
’96-97 Explorer………………...F1ZE-AA………….......63-66cc

GT-40p Head
'97-00 Explorer………………...F77E-AA………….......58-61cc
’97-01 Mountaineer…………..F77E-AA………….......58-61cc

Mustang 302 Compression Ratios:

'79.......8.4-1
'80-'81...n/a
'82-'84..8.3-1
'85.......8.4-1
'86.......9.2-1
'87-'93..9.0-1

Reference: The Official Ford Mustang 5.0, Technical Reference & Performance Handbook, 2000 and other sources.

I hope I kept everything in order, as this is the first time I've written this up. Please correct me if I've made a mistake.

George
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Old 03-16-2011, 06:21 AM   #5 (permalink)
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Nice job, George! Thanks for the post.
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Old 03-16-2011, 03:49 PM   #6 (permalink)
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Thanks, George, for the listings. I do have a question, though...There are several guys on Ebay listing GT40 F3ZE-AA heads, saying they came out of '96 Explorers. Do you have any info on this?
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Old 03-16-2011, 07:22 PM   #7 (permalink)
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CCC,

It really doesn't matter where it came from as long as you can get the casting verified as being F3ZE-AA because they are GT-40 heads. In addition, you can ID the heads as having three vertical ridges on the each end of the heads. GT-40p heads have 4 ridges.

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Old 03-16-2011, 08:11 PM   #8 (permalink)
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Thanks, again, George. The photos of the ones I was looking at did have the F3ZE castings and the 3 ridges. I appreciate the information.
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Mk 3.1 #7172 / Viper Red w/Pure White stripes
308 / GT40P heads / TFS Stage 1 cam / Crane roller rockers / Explorer intake / 65mm TB / 24# 75mm Pro M MAF/ March pulleys
Cobra spec T5 / 3.73 8.8 / Konis all around / 15" FFR Halibrands
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