6.7 Cummins vs 6.6 Duramax
As someone who knows next to nothing about Diesel engines, I am trying to figure out the strengths and weaknesses of these to. Any opinions would be appreciated.
Forum Discussion
The Duramax is an Isuzu designed motor with the Allison transmission; I believe 2019 is gonna be the last year one can get a TRUE Allison 6 speed; they’re going to a Allison “branded” 10 speed for 2020....Hard to go wrong with the Duramax Allison combination.... Cummins motor is on par with the Duramax, but, not sure about the attached transmission.... I don’t think you will be disappointed with either....
