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    1. #1
      Join Date
      Jun 2005
      Location
      Lexington, KY
      Posts
      14

      Gear Ratio for TH400

      I would be interested in opinions for a good rear gear for 12 bolt rear end. I currently have a TH400 with no overdrive and 3.73. I do drive frequently on the highway and am turning 3000rpm @ 55-60mph. I would like something that's easier on the motor. It seems the highest I can go with a 12 bolt is a 3.08. Is that correct?





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