You are correct, those axle ratios I posted are for civilian models.
I just counted 41 teeth on your ring gear picture (three times). Your pinion is definitely 6 tooth, so I get 6.83 ratio on my calculator. Kind of makes sense as military stuff is LOW geared.

Last edited by klhansen; 03/10/2023 10:14 PM.
Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.