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Thread: Gas truck to diesel swap

  1. #1

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    Join Date
    12-26-2014
    Posts
    4
    Location

    United States
    Vehicle

    1984 Dodge D-50
    Engine

    4D55-T

    Gas truck to diesel swap

    Hello guys I need some help. I have a 4D55 engine that I would like to put in a truck, however I dont have the truck yet. I found some near me that are gas engines. What I need help with is, is the 5 speed trans compatible with the gas AND diesels? Or will I need other parts to make it work? My goal is to find a gas truck thats a 5 speed and just drop my diesel in, and since they came with diesels im hoping it wouldnt be that difficult. Thanks in advance for any help!

  2. #2


    Array
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    Join Date
    10-10-2014
    Posts
    136
    Location

    Meridian, Idaho
    Vehicle

    1984 Dodge D-50
    Engine

    G54B
    Check out the diesel section on this board. You'd be surprised how much information you can get!
    I was looking into dropping a 4D55 into my 86. I hope you found one that you like!
    The 4D55 is still in the Astron engine family, so you have a few options. Any wide block transmission will fit. The most common you'll want to look for is a truck that is post 1982 that has a 2.6l (G54b) motor. I personally recommend a first gen (1982-1986) 4wd (AKA Power Ram 50).
    Good luck! I'm pretty new to the diesel scene in this truck. I got most of my information from NoahWins, he has several of the diesel engines. Just in-case you want to hit someone up who may know more than me.
    ~Mandle

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