1963 Borg-Warner T-10 Date Codes

[Jason S.]

Refer to the attached picture of the date stamps on the side of my BW T-10 case.
It reads:
3105802 - 1963MY, and my VIN.
WM1423 - This I would interpret as Warner, December, 14th day, 1962, 3rd shift - HOWEVER:

I know some components have date codes in terms of A-L (including I) and others as A-M (skipping I).

The NCRS judging guide states no date coding explanations, since they aren't judged.
The Noland Adams Restoration Guide doesn't state date codes for transmissions that I've found (page15), but does imply that transmissions would have been coded under the A-L scheme (page 148). If that were the case, "M" shouldn't exist.
Also - on page 148, Noland states the two sets of numbers should be facing away from one another.

Has anyone seen a BW trans stamped like this? The car is a December 16, 1962 build, FWIW.

[Timothy B.]

Re: 1963 Borg-Warner T-10 Date Codes

Jason,

Looks completely normal to me.

One question I would like to know, is the year (62) on the passenger side in a little embossed circle where the cast date is located. My case is void of the year and I am trying to figure out if it's a service replacement part, it does have a 62 assembly dates stamped like your transmission.

[Jason S.]

Re: 1963 Borg-Warner T-10 Date Codes

My handwritten notes on ALL the numbers (not just the pad), are as follows. Tonight I'll see if I can sneak a camera up in the tunnel and get pics specifically of the numbers you are asking about. For now - here are my notes:

Aluminum, curved 9-bolt side cover
Case: T10D1 L-13-62 pass side
Case: 3105802/WM1423 drive side
Tailshaft: T107D, 3813490, R-2, 9-27-62 all on pass side
9-25-62 side cover cast date

I have also confirmed by turning the engine over by hand in 1st gear that the trans is a close-ratio (2.20:1 as opposed to 2.50).

Would you have a pic of your stamp pad? The Noland Adams book and some other sources I've seen seem adamant that these numbers would be stamped in opposite directions.......although I wouldn't be surprised if there are cases that one assembly operator deviated from others. Especially on the day after Christmas, Dec. 26, which is my build date. Maybe my assembler still had a little "egg-nog" in his system .........................

[Mike E.]

Re: 1963 Borg-Warner T-10 Date Codes

About 99.9% of the time, cast dates include an "I" for September, and about 99.9% of the time stamped dates use "J" for September, not using an "I". Yours would follow that rule. So does every T-10 I've ever seen.

[Jason S.]

Re: 1963 Borg-Warner T-10 Date Codes

Tim,
I was able to get a decent picture of the pass side of my T10 case showing the year ("62").
If you look forward in-car from the L-13 marks, you can see an ever-so faint "62" in the casting, with no circle around it.
Refer to the attached pic........................
Jason

[Timothy B.]

Re: 1963 Borg-Warner T-10 Date Codes

Jason,

Thank you for that picture, I asked the question because I replaced the incorrect main case in my 63 with one that has a correct assembly date stamp on the drivers side but no (62) year cast in the area you show. I have read that's possible but never heard from anyone that has such a main case so I wonder it possibly could be a service part.

[Jason S.]

Re: 1963 Borg-Warner T-10 Date Codes

No problem at all - when I was first going through the car documenting the dates and codes, I almost missed that "62". It really is so faint it can be missed if there is any paint or dirt on the part. I don't know if the numbering is so faint compared to the other marks because the numbers were worn away from corrosion, or if they were that faint from the foundry. If a part like this was ever media blasted I could see the "62" going away - perhaps that happened to your part.....who knows.
If your stamped pad only shows an assembly date with no VIN, it's my understanding that is a service part?
On that note - did you have a picture of your stamped pad? I'm still curious why mine looks so odd as far as how it's stamped.

[Jason S.]

Re: 1963 Borg-Warner T-10 Date Codes

Jason,

Looks completely normal to me.

One question I would like to know, is the year (62) on the passenger side in a little embossed circle where the cast date is located. My case is void of the year and I am trying to figure out if it's a service replacement part, it does have a 62 assembly dates stamped like your transmission.

Tim,
Were you ever able to get a pic of your T-10 assembly stamps that show similar to mine (facing away from each other, "supposedly" being backwards"?

[Timothy B.]

Re: 1963 Borg-Warner T-10 Date Codes

Jason, I had to re-read your post and I will get some pics of what I have. FWIW, your transmission stamping looks perfectly normal to me and the stamped letter M is December. As far as the serial # being up side down I think it's a function of the assembly line worker and how he held the stamp so I would not worry to much about that.

[Jason S.]

Re: 1963 Borg-Warner T-10 Date Codes

Tim,
Were you ever able to get a picture of your stamp pad on your T10?

[Timothy B.]

Re: 1963 Borg-Warner T-10 Date Codes

Jason,

I will get a picture of the stamping on my T-10, I completely forgot about it.

[Wayne L.]

Re: 1963 Borg-Warner T-10 Date Codes

Jason and others-
Your stamping looks like an original. I have documented many, many T-10 housings. Sometimes the numbers are all facing the same way, and sometimes not. I checked your numbers, and they all fit with my listing of T10 housings.
Wayne

[Richard G.]

Re: 1963 Borg-Warner T-10 Date Codes

I found your build date interesting:

(WM1423 - This I would interpret as Warner, December, 14th day, 1962, 3rd shift)

I have a Dec 21st 1962 car and it also has the Borg Warner 4 speed. Seems both cars should be close to the last ones to get the BW transmission.
I have never seen an exact date of when the first Muncie was installed.
I went and took a picture of the transmission stamp on my 63. Looks like our cars are only a couple hundred builds apart.

[Loren L.]

Re: 1963 Borg-Warner T-10 Date Codes

Changeover to Muncie came o/a 15000.

[Richard G.]

Re: 1963 Borg-Warner T-10 Date Codes

So the change over wasn't till April of 1963. Much later than I thought.
Rick