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Thread: Gear Ratio difference in Gas and Diesel 2WD?

  1. #1

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    Gear Ratio difference in Gas and Diesel 2WD?

    So I have done some searching and read the wiki on gear ratios, but it never clarified if there was any difference in gear ratios between the gas and diesel 2WD models. I just would like to not have to swap rear ends if I can help it, but it makes sense in my head that the diesel model would have a lower ratio to keep the rpms down. I haven't check on the axle tags (if they are present) but thought I'd throw it out there. Anyone know?

  2. #2



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    there are only 2 ratios for the 1st gen 2wds in the US - 3.91 and 3.55. Not sure which the diesel has. You could just swap the axles , leafs and all to keep it matching...
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  3. #3

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    College Station, TX
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    1984 Dodge Ram 50
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    If occasion permits I'd like to leave the axle that is already on the truck, as it is rust free and the spacers/plastic bushings on the leaf springs are still in good shape. I think I'll just jack up the truck and have someone turn the wheel a revolution and I'll just count the number of turns the driveshaft turns. Hopefully they're the same. One less thing to worry about. Thanks for the the info nonetheless Pennyman.

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