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TH400 speedo gear

14484 Views 8 Replies 4 Participants Last post by  hpsherlin
I have the wrong speedo gears in my trans. My rear gears are 3.73, Do i need to change the metal gear on the input shaft or just the plastic one on the cable???
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Here is another site that may help you.

I have a TH350, 28" tires and 3.73 gears and my speedo gears calculated to 8 teeth on drive gear and 21 driven.

Plug in your current drive gear and see if the calculator gives you a driven gear within the available range.

Hope this helps
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