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Thread: T-400 to 700R4 Swap

  1. 11-02-2008, 09:17 PM #1
    JMSII
    JMSII is offline
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    T-400 to 700R4 Swap

    Thinking about swapping the T-400 in my 79 CJ7 w/Q-Trac to a 700R4. Anybody done this swap? Any advice? Thanks!
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  2. 11-02-2008, 10:18 PM #2
    ironman_gq
    ironman_gq is offline
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    not sure about the swap specifics but I can tell you that the th400 is a LOT stronger than the 700r4. The 700r4 also runs a little warm so a large cooler is necessary if you dont have one. a shift kit will also help it last. If you build the tranny right it should be just as durable as your th400. Have you considered finding a 4l60 tranny? Its an updated version of the 700r4 and should be somewhat stronger.
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