Can anyone make sense of the numbers stamped on my 4 speed? It's not original to the car. The 3799 date code has me confused. If I'm reading the 10,000 day calendar right there isn't 379 days in a year.
I'm just trying to identify this trans I pick up years ago. I changed my auto to a 4 speed so it has the right tail shaft for an E-body and it's not an overdrive. It's work fine over the years.
Tail shaft casting number.
Cover
3799 is December 22nd 1971
The serial # also confirms
Thanks. I must be dense but I still don't get how you come up with Dec 22, 1971 from 3799. 😂. When I bought the trans I was told it came out of a 1972 Roadrunner. I guess the guy was right.
Quote from: Joegrapes on February 10, 2020, 10:27:20 AM
Thanks. I must be dense but I still don't get how you come up with Dec 22, 1971 from 3799. 😂. When I bought the trans I was told it came out of a 1972 Roadrunner. I guess the guy was right.
This web site has fantastic resources on our main page, never forget to look there first !
Because your 1st digit in the VIN is a "2" we know that it came out of a 1972 car. So then we look up the 10,000 day calendar for the 1972 model year and find 3799....and presto there it is :banana:
https://www.e-bodies.org/resources/mopar-chrysler-10000-day-calendar-date-code/1972-model-year-engine-trans/
Ha, I was just coming back to say I found it! The 10,000 day calendar starts on July 29, 1961. That is day one. I found a site where all you need do is type in the 4 digit code and the site spits out the date. Thanks again 😀.
What is that site???
Quote from: ply64post on February 10, 2020, 11:46:27 AM
What is that site???
https://maxwedge.com/articles/10k.php :bigthumb:
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Who knows what it originally came out of . . . .
Is it just me, or do I see several clues that indicate it's been re-stamped sometime in it's past ???
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looks legit to me :takealook:
I don't have a ton of '72 Windsor, ONT data, but 2R219266 would be appropriate for a January '72 built Road Runner
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Settled then !!
. . . I'm not about to argue my point with a leading expert on this subject!
:bigthumb:
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We're all here to learn....What were the "clues" you were thinking about ?
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well . . . ok then
First of all, blow the picture up in size so you have a better detailed view of things.
A factory machined number pad would be absolutely flat, and have sharp edges around it's perimeter, also, often leaving a disc shaped pattern from the milling process . . . This pad looks uneven to me, and has rounded (sanded??) edges
Next, I can make out the outlines of previous numbers beneath the obvious ones . . . especially in the date code and sequence numbers
I could be wrong, but that's what I'm seeing :-[
Excellent points...I never "blew up" the picture, but now I see what you're looking at :thinking:
I know exactly what you're saying bigsic. I've noticed the same thing myself. I cleaned up the trans years ago with scotchbrite pads on a right angle air motor so the fact that you don't see any machine marks would not be unusual. I only paid a few hundred for the trans so I just don't see why anyone would go thru the bother of faking this trans for so little return. It's not like it's a Hemi 4 speed that's worth a ton of money. It's clearly a later model A833 since it's a 4 speed and not an overdrive unit. But you never know I guess.