BW decode - Team Camaro Tech
Transmission & Driveline Transmissions and Differentials

 
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post #1 of 10 (permalink) Old Apr 27th, 11, 07:32 PM Thread Starter
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BW decode

I have a Borg Warner 4-speed tranny aluminum case and tailshaft with an iron side cover. On the case is T10-lC WG DIV also an A with a circle around it and a 28 with a circle around it. On the tailshaft is a casting # 3843190 also a T10 7D an R-2 and a 4-15-62. It has a 10 spline input with 3 grooves and a 16 spline output shaft. Any help appreciated. Wayne
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post #2 of 10 (permalink) Old Apr 28th, 11, 07:24 AM
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Re: BW decode

To my knowledge the Borg Warner T10 transmission is not as easy to decode as the Muncie. Based on input and output shaft spline count you appear to have a T10 built in 1962. But let me do some more checking.

I believe the T10-7D tailshaft was used in 62 and 63 for full size Chevys and Corvettes.

Look at the tailhousing again. Are you sure it is not 3813490?

68 Camaro SS 396 - 468 BBC now, Air Gap Intake, 781 heads, M21, 12 bolt. / 67 Chevelle SS 396.
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Last edited by bcm66; Apr 28th, 11 at 07:54 AM.
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post #3 of 10 (permalink) Old Apr 28th, 11, 09:00 AM
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Re: BW decode

There should be an assembly code on the flat area at rear of main case.
Here - Click image for larger version

Name:	BorgWarner T10 1963 Pass. decode Warner.M-Dec.4-4th.2-1962 for a 63model.jpg
Views:	250
Size:	46.5 KB
ID:	22099

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
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post #4 of 10 (permalink) Old Apr 28th, 11, 11:00 AM Thread Starter
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Re: BW decode

I will check on the casting #'s and the other location, thanks guys. Wayne
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post #5 of 10 (permalink) Old Apr 28th, 11, 06:12 PM Thread Starter
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Re: BW decode

Got home checked the casting #'s, I must a been drinking when I wrote them down. The casting # is 3813490. There isn't any #'s on the main case.. Thanks, Wayne
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post #6 of 10 (permalink) Old Apr 29th, 11, 07:56 AM
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Wink Re: BW decode

If no stamping(s), to conform with GM requirements, then it's most likely an -over-the-counter sold unit and it had an ID tag on the lower side cover bolt with the assembly and dating info.
The OEM GM units had a tag also, but it only had a two-alpha UPC application code for final assembly line work.

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
Vintage 68 is offline  
post #7 of 10 (permalink) Old Apr 29th, 11, 10:29 PM Thread Starter
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Re: BW decode

So how about maybe gear ratio and years of production. Thanks, Wayne
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post #8 of 10 (permalink) Old Apr 30th, 11, 04:25 AM
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Re: BW decode

1st design T10 gears with 3 ID grooves are the 9310 high nickel gears. Remove the sidecover to see if the cluster/countergear and other gears have the 3 ID grooves.

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post #9 of 10 (permalink) Old Apr 30th, 11, 10:57 AM
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Wink Re: BW decode

Quote:
Originally Posted by wayne payne View Post
So how about maybe gear ratio and years of production. Thanks, Wayne
Wayne;
I know you and I discussed this inffo via PM - but I thought I would update this post for future search with the Decode and some application/year info.

Her is the decode;
GM Stamping Decode:
W = Borg Warmer supplied transmission
A = Jan - month; months run A~M for Jan ~ Dec
#ís = Day of month assembled
# = Year of model produced for
# = shift assembled


T-series Application:
Year Trans type (ratios) Stamping code
1961-62 > T-10 Wide Ratio (2.54, 1.92, 1.51, 1.00) = T10A
1962-65 > T-10 Close Ratio (2.20, 1.64, 1.31, 1.00) = T10C, T10F, T10K
1962-65 > T-10 Wide Ratio (2.54, 1.89, 1.51, 1.00) = T10D, T10E, T10G
1964-65 > T-10 Close Ratio (2.20, 1.64, 1.31, 1.00) = T10(?)
Over the Counter and other make Auto Units:
2.36 1.62 1.20 1.00 = T10M
2.54 1.74 1.30 1.00 = T10N
2.36 1.78 1.41 1.00 = T10B
2.36 1.76 1.41 1.00 = T10J & T10L
2.73 2.04 1.50 1.00 = T10H

The Second-Design, or "Super" T-10 (with both Aluminum and Iron cases) are generally post 1974 through mid/late 90's units.

Hope others with more, or updated, information post up their info.

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
Vintage 68 is offline  
post #10 of 10 (permalink) Old May 1st, 11, 10:48 AM Thread Starter
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Re: BW decode

Can't find any grooves on the inside. The input shaft has 3 grooves. Thanks for helping. Wayne
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