Forum Discussion
JIMNLIN
Jan 04, 2015Explorer III
Either one will get you up steep grades just fine.
I've had several of both but still prefer the big NV5600 6 speed tranny in my Cummins.
However very few serious tow vhicles like vans/pickups/suv/etc left out here have or offer a manual other than the Dodge Ram with a Cummins.
After market tranny builders have said a big auto like GMs Allison/AS69RC or Fords 6R140 take around 40-50 hp to operate over a manual 6 speed tranny so not much actual power at the rear wheels difference.
I've had several of both but still prefer the big NV5600 6 speed tranny in my Cummins.
However very few serious tow vhicles like vans/pickups/suv/etc left out here have or offer a manual other than the Dodge Ram with a Cummins.
After market tranny builders have said a big auto like GMs Allison/AS69RC or Fords 6R140 take around 40-50 hp to operate over a manual 6 speed tranny so not much actual power at the rear wheels difference.
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