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Old 08-17-2007, 08:56 PM
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super t10?

I need some help I bought a trans. I need to know how to decode to see what i got 25n531538 1304-065-903 wa1753 on the revese linkage numbers it has 13-04-097-901 and the forward gears it has 13-04-066-901 can any one help it also has a date on it of 8/19/74 stamped on the passanger side. 26spline input 32 on the out put thanks.

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Old 08-18-2007, 12:44 PM
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here is some stuff on borg and warner T-10 or super T-10
How do I identify a General Motors Borg-Warner T-10 vs. a Super T-10?
T-10- Design I (1A): Apr. 1957 June 1959:
Cast Iron Case w/23/64 Bore, 3rd gear 1.37

No thrust flange for 2nd gear, Mainshaft 3rd gear has bushed hole, Reverse idler halves lock with 4 lugs

T-10 Design II (1B): June 1959 Jan. 1961:
Cast Iron Case w/ 1.5 Bore

Mainshaft 3rd gear has a ground hole

Reverse Idler halves are splined (27)

T-10 Design III (1C): early 1961 1962:
Aluminum Case

Everything else is the same as above

Except 1st gear bushing on Mainshaft was eliminated

T-10 Design III (1D): early 1963 mid 63:
Aluminum Case w/smaller bore than before

Mainshaft 1st & 2nd gears are given wider driving surfaces

Main drive gear re-designed

Snap ring clip was changed to threaded nut

T-10 Design IV (1E): late 1963 - early 1974:
(1stDesign SUPER T-10)
Aluminum Cases from GM & Cast Iron-After-Market

Offered TWO new gear ratios: 2.64:1 & 2.43:1

Side-Loaded w/side-lever shift linkage

Counter-shaft was enlarged to 1.00 inch

Mainshaft resdesigned redesigned for larger 1st gear Journal

T-10 Design V (1D): mid 1974 - 1982
(2nd Design SUPER T-10)
Same as above with MORE variations of a minor significance

Main Shaft is 32-spline

Gear Ratios are 2.43, 2.64, 2.88 or 3.42
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Old 08-19-2007, 12:11 AM
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They also sell parts.
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Old 08-26-2007, 09:32 AM
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good info page... thanks jimfulco

Dont worry how old you are... it is the mileage on your body that adds up.
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