E4OD Interchange/Upgrade Rebuild

Discussion in 'Drivetrain & Suspensions' started by msorros, Apr 27, 2014.

  1. msorros

    msorros Registered User

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    I just had my 1990 F350 dually towed 250 miles due to the trans going out. The trans initially started slipping from a standing start and then it lost all the forward gears. The trans has been regularly serviced. I have read that the E4OD was upgraded throughout the years and since it looks like I'll be rebuilding it, I would like to upgrade it where I can. I picked up a donor E40D from a wrecking yard out of a 1997 E350 van.

    Should I rebuild the trans from the E350 or should I take the parts from it and put it into my original trans? I know the trans solenoid was changed around 1995. Am I correcting in thinking that I'll have to use the 1990 type solenoid in what ever trans that I use? I don't know what unforeseen issues that might come up with my intended rebuild.

    Specs:
    1990 F350 Crew Cab Dually, 150K miles
    7.5 Gas engine, E4OD trans
    Used to tow race cars

    Donor Trans: 1997 E350, 7.5 Gas

    Thanks for the help.

    Mark
     

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