Speedo Gear Question

Discussion in 'Transmission & Driveline Topics' started by Major Dad, Aug 20, 2004.

  1. Major Dad

    Major Dad Guest

    I changed the gears in my rear end from 2.73 to 3.42. Now, my speedometer is off. It shows like 55 when I'm only going 40 for example. How do I know what size gear to get for my speedometer? I have a standard TH 350 w/ 15 inch wheels running 245/60 R15 tires and 3.42 rear end.

    Thanks - Shane
  2. 73454

    73454 Guest

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