Automatic CJ Transmissions

[BusaDave9]

TH400
Three Speed Automatic
The GM Turbo Hydramatic 400 has the reputation of one of the best automatic transmissions ever made. This strong 3 speed automatic can easily handle a high horsepower engine. The only issue with the TH400 is it's relatively tall gearing. There are kits to lower the gearing but they are expensive. The TH400 is also a long transmission at 24.37 inches.


The TH400 was the first automatic transmission to come in a CJ. It was available from 1976 to 1979. It only came in CJs that were equipped with the QuadraTrac 1339.

This TH400 belongs to JAG811 and it is mated up to a QuadraTrac transfer case.


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Gear Ratios
1st – 2.48
2nd – 1.48
3rd – 1.00
Reverse – 2.07

 

[BusaDave9]

Tf999

TF999
Three Speed Automatic
The Torque Flight 999 is a Chrysler medium duty three speed. It was uncommon but used in CJs from 1980 to 1986. The TF999 was only used in front of the Dana 300 transfer case and it only came behind the 258 strait six.
The TF999 is 22.5 inches long.

This TF999 belongs to Surfhick04 It is mated to a Dana 300 transfer case.
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Gear Ratios
1st – 2.74
2nd – 1.55
3rd – 1.00
Reverse – 2.20

 

[BusaDave9]

Tf904

TF904
Three Speed Automatic
The Chrysler Torque Flite 904 is a light duty three speed transmission that was only offered with the four cylinder engine. If you ordered a strait six you would get the TF999 transmission. The TF904 was offered in CJ's from 1980 to 1986. From 1980 to 1983 the TF904 had a Chevy bolt pattern because it was bolted to the “Iron Duke” engine. From 1984 to 1986 the bolt pattern changed to accommodate the AMC 2.5L engine.


The TF904 was always married to the Dana 300 transfer case.

TF904 picture from jeeptech.com​

Gear Ratios
1st – 2.45
2nd – 1.45
3rd – 1.00

 

[BusaDave9]

Tf909

TF909
Three Speed Automatic

The Chrysler Torque Flite 909 is the basically the same transmission as the TF904. The only difference is the TF909 comes with a lock-up torque converter.



Gear Ratios
1st – 2.45
2nd – 1.45
3rd – 1.00