2017 Ram 3500 6.4L dually. Should I?
Yesterday day I drove a new 2017 Ram 6.4 Hemi Dually. I know absolutely ZERO about dodge products. In the past 20 years I have owned all Ford trucks and Chevy SUVs. Currently I carry my old camper wit...
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Again, same exact truck. One is long bed with 3.73 gears and the other is Mega cab with 4.10 gears. 3.73 gets better mpg when driving.
My comment stands as this is a thread about the 6.4 engine and so was/is the TCM magazine article. The specific issue is cylinder deactivation. The diesels (that you have) do not utilize cylinder deactivation under light loads. With the 6.4 and 4.10 axles the cylinder deactivation can occur more often than with the 3.73 axles under a load tending to lessen any gas mileage difference between the two axles.
