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78 J10 T18 To 203-205 Doubler?

Discussion in 'Jeep Truck and FC Tech' started by Robert72, Feb 4, 2020.

  1. Robert72

    Robert72 New Member

    T18 trans in my 78 j10. Curious on what 203 and 205 i should use to make a double case easiest..

    Been googling it and there is like 3 different options. Curious on what 203 bolts right into my
     

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    Robert72, Feb 4, 2020
    #1
  2. Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Jw60, Feb 4, 2020
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  3. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    looks fun to do.
     
    47v6, Feb 4, 2020
    #3
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  4. nickmil

    nickmil In mothballs.

    If you can find a round pattern input 203 then it “should” bolt to a T-18 with a round pattern adapter for a 205/231/241/242 etc. I have no knowledge of round pattern 203’s so you are on your own there. I know there were some real late model 205’swiththe round pattern. The input spline count is another thing to consider.
     
    nickmil, Feb 9, 2020
    #4