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Old 04/29/2009, 08:42 PM   #1
Doug
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Cylinder Head for 390

I am looking to determine the correct Cylinder Head Number “ID” number(s) for my 390GT S-code; built in July 1968. I have heard conflicting casting numbers and want to make sure that I have the correct ones – also should you have these please contact me.

Thanks for your help - Doug

66 Shelby GT 350, 55 Chev Nomad my sons 07 Shelby GT#4208. SOLD Candy Apple Red 390GTAuto w/air - Now in Australia.
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Old 04/30/2009, 06:45 PM   #2
robert campbell
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I am digging!! Get back soon!

Rob
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Old 04/30/2009, 06:48 PM   #3
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Quote:
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Doug,
I am digging!! Get back soon!

Rob
Any help regarding casting numbers and date codes would be appreciated... Thanks Doug

66 Shelby GT 350, 55 Chev Nomad my sons 07 Shelby GT#4208. SOLD Candy Apple Red 390GTAuto w/air - Now in Australia.
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Old 04/30/2009, 07:41 PM   #4
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i'll be home on the weekend and i'll check my books also.
the heads should have a 14 bolt exhaust manifold pattern, and seems like they could be a C6AE-R if i remember right. i have a couple of heads but i can't remember the numbers for sure

jbart
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Old 04/30/2009, 07:53 PM   #5
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Does this help?

http://www.mustangtek.com/heads/Heads.html
Scroll down to C8AE-H

http://www.fordification.com/FEcasting-numbers.htm
Sorry, those are blocks, not heads.

Here's an interesing article about FEs. Doesn't help much with the head question but it has other good information.

http://www.mustangandfords.com/techa...cts/index.html

Still googling!

Here's some more info.

"390GT heads use the same casting numbers as any other 352, 390-2V, 390-4V, 410 or 428-4V (notCJ) of the same model year. There is no unique casting number for GT heads. There were several FE head castings used in 1967 and 68 for all varieties of FE, any of them could be used on a 390GT.

The only identifying factor for 390GT heads is the 14 bolt exhaust bolt pattern. There is no difference in the heads from any other FE of that model year. Any non - GT head of the 67 - 68 era is easily drilled. The problem comes if the machinist drills too deep, that is when you get water coming out the exhaust pipe."


"on GT heads, they should have both horizontal and vertical bolt patterns on the heads for the exhaust manifolds"

Last edited by Mosesatm; 04/30/2009 at 08:17 PM..
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Old 04/30/2009, 10:28 PM   #6
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By July 68 I would guess that the C8AE-H head was what they were using, Sort of a utility head since it came in all sorts of configurations (number of exhaust bolt holes)
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Old 05/01/2009, 12:05 AM   #7
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Doug, Jeff; Mine are C8AE-U. They're on my '68 S-code, tho I can't swear they were original. What does the "-U" tell us? I was told a couple of years ago that 390GTs had 428 heads, but have since found that's not true. Correct?
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Old 05/01/2009, 05:14 PM   #8
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This is what I have from The Ford Muscle Parts Identifier and Restoration Guide.

C8OE-B or F 2.02 intake 1.55 exhaust 390 GT 14-bolt pattern.

C8AE-H 2.02 intake 1.55 exhaust 390 and early 1968 early 428 pre cobra jet. 14-bolt pattern

C8OE-N 2.08 intake 1.66 exhaust 428 cobra jet 1968 to 1970. 14-bolt pattern

Just to confuse people a few years ago, I drilled a 14-bolt pattern into a set of 1972 heads off a 390 from a F-100 truck. So the 360 could use the 14-bolt cobra jet style manifolds in a 1969 Ranchero…. Actually to sell the Ranchero! A 360 cobra jet!! Not. Confusing to someone someday… Yup…

Rob
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Old 05/01/2009, 05:56 PM   #9
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Rob than what would a C8AE-U be off?

66 Shelby GT 350, 55 Chev Nomad my sons 07 Shelby GT#4208. SOLD Candy Apple Red 390GTAuto w/air - Now in Australia.
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Old 05/01/2009, 06:44 PM   #10
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Quote:
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Rob than what would a C8AE-U be off?
Hold the phone Gentlemen! The heads pictured are C6AE-U, not C8. Would that make them 1966 or 67 GT390? Could they still be original?

'Sorry for the mistake. Doug, had you located a set yet?

Tim
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Old 05/01/2009, 07:05 PM   #11
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Quote:
Originally Posted by Midnight Special View Post
Hold the phone Gentlemen! The heads pictured are C6AE-U, not C8. Would that make them 1966 or 67 GT390? Could they still be original?

'Sorry for the mistake. Doug, had you located a set yet?
Here's a little information. Not sure if it helps though.

http://www.fordforums.com/f500/c6ae-...-heads-158493/
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Old 05/01/2009, 07:56 PM   #12
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Tim/Arlie,
My experince with Ford motors shows that cast numbers from one to two years prior to actual assembly happened quite often. So a 66 or 67 cast number could appear on a 68 car. I have seen it quite often in intake and exhaust manifolds.

I my opinion I would not doubt 66 or 67 cast numbers on a 68 car. Especially in high performance parts such as heads, intakes, and exhaust manifolds. Not so much in standard engines that they made way more of.

Mechanicalguy should weigh in here if he sees it. He was there!

Rob
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Old 05/01/2009, 10:35 PM   #13
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Quote:
Originally Posted by Midnight Special View Post
Hold the phone Gentlemen! The heads pictured are C6AE-U, not C8. Would that make them 1966 or 67 GT390? Could they still be original?

'Sorry for the mistake. Doug, had you located a set yet?
I found some C7AE-A heads that I am considering.

66 Shelby GT 350, 55 Chev Nomad my sons 07 Shelby GT#4208. SOLD Candy Apple Red 390GTAuto w/air - Now in Australia.
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Old 05/01/2009, 10:58 PM   #14
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I found some C7AE-A heads that I am considering.

I wonder if the C6AE has the outlets for the smog tubes? The C7AE-A has them.

66 Shelby GT 350, 55 Chev Nomad my sons 07 Shelby GT#4208. SOLD Candy Apple Red 390GTAuto w/air - Now in Australia.
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Old 05/02/2009, 09:32 AM   #15
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my books do not list a specific 390 gt head either, just the 14 bolt exhaust pattern.
i have a C6AE-L which have the smog ports on the exhaust, and a C7AE-A head that isn't drilled for the smog ports, but could be.
i myself like the taller port heads, C4AE-G i run in my pickup with the 410.
with cobra jet valves, they call them a poor mans 428 cj head. then you put a MT crossram dual 4v intake on it and........sorry i'm getting carried away

jbart
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