Replacing a 3.8 manual w/ a 3.8 auto

Discussion in '94-04 V6 Mustang' started by voteaustin, Nov 27, 2008.

  1. voteaustin New Member

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    Location:
    TX
    Same year, 99/00, same housing
    no need for the 01 and newer engine mounts,
    but what will i have to change about the auto engine to keep my standard gear ratios?
    again, VERY new to the mustang engine....

    also, if anyone knows where to get a NEW radiator for the 00 3.8?
  2. klotzstang New Member

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    If you are talking about the rear end gears, you can use what you have.
    But you are stuck with the transmission gears, the manual is a 5-speed, and the automatic is a 4-speed.

    Any radiator shop will sell you a new radiator. To switch to an automatic, just add a transmission cooler, larger than standard anyway.

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