Cummins HO

BossHogg

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Oakland Township, Michigan
Ram Year
2015
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6.7L Cummins
There is no need for a 10 speed tranny with these Cummins engines. They have so much torque over such a wide rpm range there is no need for that many gears to keep the engine in a narrow rpm range.
Those big old motor homes weighing in at 50K plus pounds and pushed by a Cummins ISX coupled to a 6 speed Allison do just fine.

I can see the need for additional gears in a constant stop and go, it would lessen the burden on the driveline.
 

Gr8bawana

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2017
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6.7 CTD
Those big old motor homes weighing in at 50K plus pounds and pushed by a Cummins ISX coupled to a 6 speed Allison do just fine.

I can see the need for additional gears in a constant stop and go, it would lessen the burden on the driveline.
I believe this thread is referring to our pick-up trucks.
 
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