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Old 11-07-2021, 06:18 AM   #1
STEVE O
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Default 1954 Ford 239 Flexplate

Hi,
My son has a 1954 Ford with a 239 y block and it has a broken flex plate. In looking at the different suppliers of the updated flex plate none of them shows it will work on his 239. I also see in the flat rate manual the 1954 carries a different part number than the 55-56 did. Does anyone know if the updated one will indeed work on his 239?
Thanks
Steve
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Old 11-07-2021, 10:01 AM   #2
KULTULZ
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Post Re: 1954 Ford 239 Flexplate

Quote:
Originally Posted by STEVE O View Post

My son has a 1954 Ford with a 239 y block and it has a broken flex plate. In looking at the different suppliers of the updated flex plate none of them shows it will work on his 239. I also see in the flat rate manual the 1954 carries a different part number than the 55-56 did. Does anyone know if the updated one will indeed work on his 239?

Thanks
Steve
The correct SERVICE PN for the 54 239CI flex-plate is B8A 6375-C. It is a 1958 PN released for service retrofit. It is the same as used on the period 223CI six FM. It also requires B9AZ 6A366-A reinforcing rings (3) as the replacement will not be as a heavy gauge as the original part.

Please do me a favor, when the plate is replaced take a quality photo and post it within this thread. I would like to know how it looks.
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Old 11-07-2021, 10:15 AM   #3
STEVE O
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Default Re: 1954 Ford 239 Flexplate

Hi KULTULZ,
Thanks for the reply. I sure will post a photo if and when he pulls it out, as he may change mind and repower or sell. I'm assuming then that that service part number flexplate is limited to the 1954 239 & 223 and the 55-56 will not work?
Thanks again
Steve
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Old 11-07-2021, 10:28 AM   #4
KULTULZ
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Post Re: 1954 Ford 239 Flexplate

Quote:
Originally Posted by STEVE O View Post

Hi KULTULZ


Quote:
Thanks for the reply. I sure will post a photo if and when he pulls it out, as he may change mind and repower or sell. I'm assuming then that that service part number flexplate is limited to the 1954 239 & 223 and the 55-56 will not work?

Thanks again
Steve
Correct. 1955/ uses a different plate.

Do you need a possible parts source?
Attached Images
File Type: jpg FLEXPLATE - 1954 239CI FM - B8A 6375-C.jpg (51.2 KB, 19 views)
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Old 11-07-2021, 10:45 AM   #5
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Default Re: 1954 Ford 239 Flexplate

Yes Please. Thanks
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Old 11-07-2021, 10:49 AM   #6
KULTULZ
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Post Re: 1954 Ford 239 Flexplate

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This info is from an older post on a truck forum discussing the flex-plate for a 223CI. It will give dealer locations that showed having them in stock -

- https://www.ford-trucks.com/forums/1...1-p-400-a.html
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Old 11-07-2021, 12:57 PM   #7
STEVE O
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Default Re: 1954 Ford 239 Flexplate

Thank you very very much. With your information I was able to grab one on ebay, thus a Christmas present for my son.
Thanks again
Steve
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Old 11-09-2021, 10:14 AM   #8
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Default Re: 1954 Ford 239 Flexplate

Quote:
Originally Posted by STEVE O View Post
Hi,
My son has a 1954 Ford with a 239 y block and it has a broken flex plate. In looking at the different suppliers of the updated flex plate none of them shows it will work on his 239. I also see in the flat rate manual the 1954 carries a different part number than the 55-56 did. Does anyone know if the updated one will indeed work on his 239?
Thanks
Steve
I have a 54 with the same flex plate and would also like to know if the later
55, or 56 will work. Mine is good at this time, but it would be beneficial to
know. (Air cooled Ford O Matic trans).
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Old 11-09-2021, 11:11 AM   #9
KULTULZ
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Post Re: 1954 Ford 239 Flexplate

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Originally Posted by jayvee34 View Post

I have a 54 with the same flex plate and would also like to know if the later 55, or 56 will work. Mine is good at this time, but it would be beneficial to know. (Air cooled Ford O Matic trans).
FORD made changes/improvements in the FM design for the 1955 model run. FORD and BW had a joint design that ended in 1955. That explains the flex-plate differences. The 3PC CONVERTOR was also different.

But you have to confirm what trans is actually in the car (as it may have been changed) and that indeed the engine is a 1954 EBU 239CI.
Attached Images
File Type: jpg TRANS - FM - 1954-55 ID CHART.jpg (21.5 KB, 15 views)
File Type: jpg TRANS - FM - FLEX-PLATE - 1954.jpg (18.2 KB, 7 views)
File Type: jpg TRANS - FM - FLEX-PLATE - 1955-57.jpg (5.5 KB, 5 views)
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- DISCLAIMER -

The above posted information is in my opinion only (IMO) and may contain copy and paste material(s).

In addition, any above tech information is supplied in good faith. No responsibility implied or otherwise can be accepted for the way others use or interpret provided data.

Your experience(s), opinion(s) and mileage may vary.

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Last edited by KULTULZ; 11-09-2021 at 12:59 PM. Reason: ADD INFO
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