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Thread: Fuel Mileage report

  1. #1

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    07-08-2017
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    76
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    Cataula , GA
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    1979 Dodge D-50
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    Other

    Fuel Mileage report

    I promised a report on the results of my fuel mileage modifications. To recap, on a 2.6 I installed a lean jetted Weber 32/36, fiddled the advance to have lots of initial with a quick curve but limited total and a functional vacuum advance. I run stock tires on stock wheels, the body is stock height and the 5 speed is stock with a new clutch. I went from Columbus GA to Knoxville TN via Murfreesboro TN. Unloaded, but pulling a 100 lb 4x8 trailer with sides (wind resistance was a consideration). It pulled well and the engine ran well the entire trip with no overheating or starting trouble. I averaged 25.6 MPG!
    I then loaded up a 360v8, a 904 transmission, and all the accompanying accessories and sundry, I figure 500 lbs or better in the bed. In the trailer I put a 175LB stereo console (I fix stereo consoles for a hobby) and I averaged- 22.8 MPG.
    I was driving with the speedo pegged at several points in the trip and was mostly driving over 75MPH. I am thoroughly impressed with the MPG I pulled down. Has anyone else done better?

  2. #2



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    03-20-2011
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    4,242
    Location

    Pittsburgh, PA
    Vehicle

    1980 Dodge D-50
    Engine

    G54B
    I have gotten 25 - 26 MPG with Geronimo with the speedo pegged most of the time, with a tonneau cover, easy up 10x10 (old style steel commercial model) and assorted display materials and tools - about 400 lbs total. He has a 32/36 weber, pacesetter header, and Flowmaster exhaust that splits to duals. Weber jetted to match mods.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  3. #3

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    01-24-2017
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    276
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    I get about 13L/100km with my V6 conversion

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