62-65 early model speedometer gear Chart?

chewy said
Never seen a calculator that works for Early A's. If it has a 41 tooth, definitely not for our cars.

If you don't have a technical service manual for your year you should really have one. That's probably what's missing.
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Interesting that the 64 TSM gives a shift pattern summary the Torqueflite with a 3.91 - 1 but doesn't show a 3.91 option in the pinion chart