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Help identify odd engine serial number stamping

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Old Jan 26, 2025 | 01:04 PM
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Help identify odd engine serial number stamping

What is the history of this block?
Very faintly most of the original numbers are still there: 74???U1641860
It has forged rods, but is in an 03 Excursion.


ps... I cannot get images to upload. I've tried two browsers, using file upload and URL upload....

 
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Old Jan 26, 2025 | 01:24 PM
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The better question is why did someone feel the need to go to such lengths to cover the original number. It's an obvious cover job, between the peening all over everything then the captain of the short bus going after it with a hand stamp set, just screams HOT.

If the image file is too big they won't load. I think the cutoff is 10MB.
 
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Old Jan 26, 2025 | 01:44 PM
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Originally Posted by udsuth78
The better question is why did someone feel the need to go to such lengths to cover the original number. It's an obvious cover job, between the peening all over everything then the captain of the short bus going after it with a hand stamp set, just screams HOT.

If the image file is too big they won't load. I think the cutoff is 10MB.
Yea, I'm thinking about that too. I have read in my hours of looking for info on the serial number, that a re-manufactured engine may get re-numbered. So, I'm hoping that is the case here, or something else that's legitimate.

photos are 2MB...
 
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Old Jan 26, 2025 | 01:46 PM
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Why does it matter? If it's a serviceable block, run it. If not, have it machined and rebuilt. If it's just about "numbers matching", it doesn't add value.

 
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Old Jan 26, 2025 | 01:47 PM
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There used to be a minimum post count before you could post pics I think. Doesn't really make sense why you can post some and not others, but might try throwing a few posts around and retry.
 
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Old Jan 26, 2025 | 02:03 PM
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Originally Posted by cleatus12r
Why does it matter? If it's a serviceable block, run it. If not, have it machined and rebuilt. If it's just about "numbers matching", it doesn't add value.
I want to know the configuration history of the engine, particularly since my odometer isn't a reflection of it's usage history.
Is it the original block but with forged rods?
Is it OBS block, or other SD block, what year?
Is it common practice for Ford to stamp blocks this way, when it was recalled, rebuild, etc?
 
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Old Jan 26, 2025 | 02:10 PM
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Duplicate post

 
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Old Jan 26, 2025 | 02:12 PM
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It's a 7.3L that has either had machine work done or was on a shelf at a salvage yard. Nobody can tell you what that gobbledy-gook means.

It's been stamped T444.something..E at some point. Maybe it's an International engine.

Whatever it is it's a 7.3.

Want me to tell you it's a 1999 build T444E out of a Bluebird school bus that had 83,556.3 miles and 23044 hours on it when it was parted out after being t-boned by a train?


 
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Old Jan 26, 2025 | 02:21 PM
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Originally Posted by cleatus12r
It's a 7.3L that has either had machine work done or was on a shelf at a salvage yard. Nobody can tell you what that gobbledy-gook means.

It's been stamped T444.something..E at some point. Maybe it's an International engine.

Whatever it is it's a 7.3.

Want me to tell you it's a 1999 build T444E out of a Bluebird school bus that had 83,556.3 miles and 23044 hours on it when it was parted out after being t-boned by a train?
No. Can you tell me what the remaining serial number indicates, such as model or production year? 74???U1641860
From what I understand from this post #3, 1498319 is the beginning of the final production run for PM rod engines. However, this block is 164xxxx. So is this a later production block, so maybe the original block.
 
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