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Old 02-20-2019, 01:53 PM
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Default Muncie stamp

It has no VIN, no CT , and no A, B, or C end stamp...seems to be a '70 unit given the zero after the P...guesses as to what happened here? Or simply an April 12th 1970 Muncie that did not get stamped...it is in a '69 Vehicle so not original to that car.
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Old 02-20-2019, 02:46 PM
lbnaz lbnaz is offline
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What is the case casting number. Looks like a 5010 case stamping which would make it a 66-67 trans. Larry
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Old 02-20-2019, 02:56 PM
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Vin could be stamped on top of the case
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Old 02-20-2019, 04:15 PM
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Quote:
Originally Posted by lbnaz View Post
What is the case casting number. Looks like a 5010 case stamping which would make it a 66-67 trans. Larry
Thanks Larry, I think you're right - it's an earlier case than '70 : 3851325.
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Last edited by Tracker1; 02-20-2019 at 04:24 PM.
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Old 02-20-2019, 04:33 PM
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That is a 64-65 case with the smaller pin. It shows the trans was assembled on April 12th of one of those years. From memory, I believe it is 1965 because 64 has the assembly code on the cover side of the trans.


Jason
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Old 02-22-2019, 03:50 AM
Verne_Frantz Verne_Frantz is offline
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Take a look at the raised boss on top of the case at the rear. If it's rounded, it's '64. If it's square, it's '65.


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Old 02-26-2019, 02:20 AM
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Quote:
Originally Posted by Verne_Frantz View Post
Take a look at the raised boss on top of the case at the rear. If it's rounded, it's '64. If it's square, it's '65.


Verne
A couple years back there was a discussion about the top boss of a Muncie main case, and everyone was of the same belief, 1964 and older rounded, 1965 and newer square...

I thought I had seen 1965 cases with the round top boss...

So I went thru 75+ 325 cast Muncie main cases, and sure enough early 1965 model year Muncie main cases have the rounded top boss...

The change over came (from my observation) 2nd week of December 1964 calender year rounded , 3rd week of December 1964 calender year square...

I'm traveling right now so I don't have the exact dates with me...

Hope this helps... Crash
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Old 02-26-2019, 03:59 AM
Verne_Frantz Verne_Frantz is offline
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Thanks Crash. That helps my research in tracking trans VINs.


Verne
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Old 02-26-2019, 02:10 PM
napa68 napa68 is offline
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Sorry to hijack the thread, but anyone ever seen a stamp like this? I cannot say I have. It's from a 71 Corvette with 15,000 miles and shows no sign of ever having been out. It almost looks knurled to me

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Old 02-26-2019, 09:59 PM
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Yes thats a factory XXXX out. I have that on my 1974 Z28 trans.
Someone at the factory goofed the stamping on mine.
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