Gear Ratios

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hapec12

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Albion,Michigan.
Ram Year
2018
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Hemi 5.7
So, what is the real MPG difference in 3.21, and 3.92 gears? Overall day to day driving. Thanks.
 

ramffml

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hemi 5.7
We have tons of threads on this already. Some of us do very well with the 3.21, but in the city there is 0 difference. The 3.21 has to be in 8th before the fuel savings kick in vs the 3.92.


The 3.21 is the obvious choice if you need/want a truck but are still concerned about getting the best MPG you can while in said truck. You're on a forum which attracts a high amount of enthusiasts, so results will tend to skew in favour of those who don't care about MPG. Keep that in mind when reading responses. People tend to respond to this question through their own eyes/preference, instead of answering the question through the eyes of the guy asking the question.

Edit: See this post from Dusty who has very carefully recorded MPG across different conditions.
 
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