1963 Borg Warner Transmission ID problem

[Ruedi K.]

Hello together

I checked my transmission (Borg Warner T10) and what I found is
3813490 + R-2 + T10-7D + T10 D-1

but I did not find the serial number instead there was a weird WL1421 and a number + AL.
I do not have a clue what this WL + AL means and why the serial number of the car is missing.
Will post further info tomorrow. Thank you for any help.

[Timothy B.]

Re: 1963 Borg Warner Transmission ID problem

Ruedi,

WL1242 indicates the date of transmission assembly and in this case W=Warner Gear, L=November, 12 =day of month, 4=1964 and 2=second shift.

Are you sure the year # is 4 because if it is then it's a service case. I can't help with AL but the number next to the assembly date is the serial # of the car, what number is stamped there.

[William C.]

Re: 1963 Borg Warner Transmission ID problem

Sounds a lot like a warranty trans which would explain no VIN on the trans as well as the late date.

[Ruedi K.]

Re: 1963 Borg Warner Transmission ID problem

So, it was wrong what I wrote yesterday. Sorry.

The transmission case has 9 bolts, so it is a Borg Warner T10 (T10 D1) + T10-7D + 3813490 + R-2
Date is WL1421 and the number there (VIN?) is 3108923 and there is a metal tag AL.
On the case is the date 10-23-62
But the VIN of my 1963 Corvette (built around May 6, 1963) is 30867S114508, so the serial number on the transmission does absolutely not match. I think it was supposed to start with an S anyway?? Does anyone have an idea off what car this transmission came, the VIN is much too high for a Corvette...

I also found a T10 transmission on Ebay which claims to be for a Corvette and that one does also have a very high VIN stamp: WM 2723 + 3107299.

http://www.ebay.com/itm/1963-Corvette-Borg-Warner-T-10-4-speed-Transmission-/280770200584

I don't have a clue why these numbers are there and why they are so high, I just can't believe their off a Corvette?

Thank you again and have a nice day.

Rudy

The bellhousing seems to be the original one, there is also a number 3788421

[Loren L.]

Re: 1963 Borg Warner Transmission ID problem

Your transmission originally resided in '63 Corvette #8923.

[Timothy B.]

Re: 1963 Borg Warner Transmission ID problem

Ruedi,

Your May car should have a Muncie transmission, there was a change from T-10 to Muncie sometime in the spring of 1963.

Try to find car # 8923 and return it's original transmission if you decide to install a Muncie.

[Harry S.]

Re: 1963 Borg Warner Transmission ID problem

The last 63 that I have in my survey with T10's is 14396. I have some after that but they can not be confirmed to be original to the car.

[Ruedi K.]

Re: 1963 Borg Warner Transmission ID problem

Hello all

Thank you for the good answers. So 3108923 does also identify Car number 8923, it does not need to start with an S?

If this is like that, then the previous owner might have had some damage to the original Muncie 4-Speed in the past and switched that one out with another transmission of Corvette 8923 (Borg Warnter T-10) here in Switzerland, just speculating.

Anyway, it will be very difficult to find car 8923, because it may have had an accident sometime in the past. I assume that car was also in Switzerland... But if anyone owns car number 8923 he may join in.

So for my car with VIN 30867S114508 (built May 6, 1963) I should go for a 4-Speed Muncie M-20 (also wide-ration, I assume).
My car is a L75 (327/300). What sources in the USA would I have to locate a rebuilt Muncie with correct numbers (VIN doesn't matter, as my transmission won't be found again )

Thank you

Rudy

[Bob R.]

Re: 1963 Borg Warner Transmission ID problem

You have to be careful to locate a 63 Muncie and not a 64 or newer. The 63 main case and tail piece were specific to that year and the 63 Muncie has the small baring retainer similar to the Borg Warner transmisson. If you have the correct original bellhousing only the correct Muncie will fit.

[Ruedi K.]

Re: 1963 Borg Warner Transmission ID problem

Hi Bob

Thank you for your advice. I have a 1963 judging manual here, and will have to look carefully for the right 4 speed Muncie M20.
For my L75 (327/300) it should be a wide-ratio and reasonably dated for a May 1963 car (S114508 (built May 6, 1963)).
Any advice on where to look to find a rebuilt Muncie transmission would be greatly appreciated. I prefer buying from a specialist, because Ebay has lots of spare parts of Muncies, but no complete ones. I have the original 3788421 bellhousing on the car.

3831704 1963 Only small 6207NR Front Bearing ,Pat. Pending, 7/8" Bore
3831731 1963 "Thin Fin Tail" Driver speedo 27 spline
3831707 1963-1965 Early side cover stud type shift shafts

Are these correct?

Thank you in advance.

Rudy

[Bob R.]

Re: 1963 Borg Warner Transmission ID problem

My car is very close to yours in serial number ( 15138). I believe the part numbers you listed are correct, I don't have any reference books with me right now to check. I bought my parts on ebay and as you suggested it lead to problems. I ended up rebuilding and replacing several parts in the transmission. It had to be installed in the car twice once to figure out the condition then repair and re install. Fortunately I had a friend who is very good at transmissions and did the labor for me. I was able to find a main case dated mid May. You will be able to use your original shifter from the Borg Warner transmission however the linkage from the Borg Warner will not work on the Muncie. I'm sure if you ask on this site someone will come up with a vendor who specializes in 4 speeds sorry I can't help with that.

[Ruedi K.]

Re: 1963 Borg Warner Transmission ID problem

Hello Rob
Thank you for the info on the linkage. Corvette Central does have the Muncie linkage, so that won't be a problem so far.
The most difficult thing will be to locate a complete Muncie with a very early May date or an April date.

I saw a Muncie advertised here: http://sandiego.ebayclassifieds.com/...o/?ad=27514522 but it has a June date, which would be illogical towards my car's build date.

Anyway, if anyone has a tip, where I could obtain a correct Muncie transmission, please send me a message.

Thanks for your help.

[Bob R.]

Re: 1963 Borg Warner Transmission ID problem

Ruedi,
If you look in the Driveline you will find a couple of vendors specializing in Muncie transmissions. I am not familiar with any of them but you can get a recommendation on this board. I know it is nice to get the correct date for your car but you may want to keep in mind NCRS does not judge the date on transmissions. You may have difficulty locating an early enough 63 Muncie. The Muncie I found was made on May 16 and my car was made on May 14. It was the best I could do and as I mentioned it doesn't get judged.

[Ruedi K.]

Re: 1963 Borg Warner Transmission ID problem

Hello Bob
Thank you for your reply. In the meantime, I got in touch with Larry from D and L Transmissions. He's very friendly to deal with and also very knowledgeable about these Muncies.

I will try to locate a correct one (case numbers correct etc., date and VIN won't matter that much) and let him modify the internals of the transmission to a bit better standard (66-70 gear set, etc.), I think that's the best way for me to go, as my 1963 Corvette is a driver and I drive it quite a lot in summer.
A nice weekend to the Corvette folks.

Rudy

[William C.]

Re: 1963 Borg Warner Transmission ID problem

Keep in mind that the '63 Muncie is also a conglomeration of one year only parts to fit the '63 Bellhousing. I think i remember the case casting ending in 704.