Forum Discussion
Cummins12V98
Apr 30, 2016Explorer III
Smokey Lew wrote:
You guys have great suggestions. Love the feedback.
If I went with 6.7 diesel engine and the heavy duty AISIN trans, it would have to be in a 3500. Seems it's only offered that way. That being the case, would the standard 3.42 rear axel ratio be a hinderance for grades? I was considering the 6.4 HEMI with a 4.10 axel ratio. Never pulled with a diesel before.
The 3.42's are a great ration for the SRW weight limitations. I towed a combined load of 29K with my 11 HO Dually and 3.42's. Only negative was getting the load rolling on a big grade. The Aisin takes care of that problem with it's lower starting gears. You will be towing in 5th if at around 1,700 rpm at 60, that is a great towing rpm for the 6.7. Bonus is the long legs running solo for awesome mileage.
Also the 3500 SRW/DRW factory rear air ride is an excellent option!
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