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This is great info, only problem is finding the drive and driven gears. Anyone know a vendor that sells gears for the 203/205 transfer case?TCI Auto Speedometer Gear Calculator - TCI® Auto
Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. This is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line!www.tciauto.com
You need to know tire diameter, gear ratio, and either the drive or driven gear tooth count. This chart will calculate the other gear needed.
Sometimes the chart says “no gear available” that means there is no gear that can be used with the existing gear, both need changed. You can play around with tooth count, the closer you get to a whole number, the more accurate your speedo will be.
For example, the calculator might say you need a 44.3 tooth. Obviously, you can’t have a gear with 44.3 teeth, your options are a 44 or 45 tooth. Either will get it close, but a 44 would be closer.
