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Final gear ratio

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  • #568793
    JakeJake
    Participant

      This might not be the best place to have asked, but If it goes wrong, I might be back here anyway. I own a 1992 Mercury Grand Marquis. My friend who has a manual mustang is willing to sell me 4:10 final gears for my car, but it is an automatic. I am sure it will change the shift points, but will my trans be able to handle this or not?

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    • #568820
      LukeLuke
      Participant

        If your engine and trans are bog standard, I think your trans will be just fine unless you thrash it, but that will kill any trans eventually. Best to check what gears you have already so you have an idea of how different it will be. I doubt it would have much effect if any on what rev range your trans shifts at but definitely will effect what road speed it shifts at. Not overly familiar with American cars as I am a truck mech. in Australia so please correct me if I am mistaken.

        Egber
        Stayin’ dirty down under

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