6R140 TorqShift vs. Allison 1000 vs. 68RFE

Automatic Transmission Shootout

While the Ford and Allison transmissions are significantly heavier than the Dodge, they both support engines much more powerful than Cummins current 6.7L. Dodge has not made available the maximum input torque rating of their new transmission, but the 68RE has the same strength designation "8" as the 48RE (Chrysler rates their transmissions on a scale of 1 - 9, 9 being the strongest). The new Ford TorqShift is rated to handle significantly higher torque levels. Preference aside, all new diesel truck owners can celebrate - all 3 automakers are finally offering heavy duty, 6 speed DIESEL transmissions behind their powerplants.

 

TorqShift

Allison 1000

68RE

Transmission:

Ford 6R140 TorqShift 6 speed automatic transmission

Allison 1000 6 speed automatic transmission (current version)

Dodge/Chrysler 68RE 6 speed automatic transmission

Applications:

2010 - current Ford Trucks

2010 - current Chevrolet/GMC HD trucks

2007.5 - current Ram Trucks (6.7L Cummins only)

1st Gear:

3.97 : 1

3.10 : 1

3.23 : 1

2nd Gear:

2.32 : 1

1.81 : 1

1.84 : 1

3rd Gear:

1.52 : 1

1.41 : 1

1.41 : 1

4th Gear:

1.15 : 1

1.00 : 1

1.00 : 1

5th Gear:

0.86 : 1

0.71 : 1

0.82 : 1

6th Gear:

0.67 : 1

0.61 : 1

0.63 : 1

Reverse:

3.31 : 1

4.49 : 1

4.44 : 1

Max. Input Torque:

1,400 lb-ft

Estimated. 775 - 800 lb-ft

N/A, same input torque rating designation "8" as 48RE

Weight:

Approx. 350 lbs

Approx. 330 lbs

Approx. 235 lbs

 

You may also be interested in the following articles:

TorqShift vs. Allison vs. 48RE

Ford vs. GM vs. Dodge Diesel

4R100 vs. Allison vs. 47RE