Borg Warner Brute Force T-10 4 Speed Transmission 3.44 1st Wide Ratio 10/27 Spline


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SKU: 25338 Categories: , , ,


Borg Warner Brute Force T-10
4 Speed Transmission

Ratios: 3.44 first, 2.28 second, 1.46 third, 1.00 fourth — Ultra low ratio

Ratio changes between gears:   34%   36%   32%

Intended for street driving to provide quick acceleration and yet retain a high overall ratio for good economy
It should be used in conjunction with an economy axle ratio (i.e., 3.31, 3.07,  2.73 to 1)


Advantages of the ultra low/high axle ratio combination are:

  • Fast starts without bog or stumble
  • Good, high speed acceleration in third gear
  • High level of torque multiplication in all reduction gears
  • Quiet, economical, low RPM street driving
  • An ideal street/strip combination

10/27 Spline

Main Case  13-04-065-902  (Dated C.5.74)
Tail Housing  T10K-7  (Dated A.24.74)
Side Cover  

Date Code  WJ1942
Trans Tag  B-W  AS8-T10U

Has an EXCELLENT gear set and has been rebuilt to include:
NEW magnetic fill plug
NEW synchro rings
NEW synchro ring kits
NEW hardware
NEW keys/springs
NEW front bearing
NEW rear bearing
NEW small parts kit
NEW bushing
NEW seals
NEW cluster pin
NEW gasket
OEM bolts

Synchro assemblies have been modified to prevent popping out of gear.

Cases have been media blasted, steam cleaned, and painted. All threaded holes have been cleaned and tapped also.

A custom wooden crate and insurance is provided in the S&H costs.

A one year limited warranty is included.


Additional information



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Davids4Speeds LLC

626 East Kilbourn #2304
Milwaukee WI 53202

3535 West State Street
Milwaukee WI 53208
(by appointment only)

Phone: +1 (262) 513-8331

Davids4Speeds LLC is owned and operated by David West. With 30 years experience as a mechanic and muscle car specialist, David West re-builds 4-speed manual transmissions for 196x-197x automobiles.

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