Early Ford trans first gear ratio

Hi gang!

I'm sitting down crunching some numbers for a project I'm working on. Does any body know right off the top of their head the ratio of first gear in the typical '39 type trans? I knew this at one time but my brain just isn't working well enough to recall it. I searched but didn't come up with anything.

 

28 tooth cluster (passenger cars) is 2.82 to 1
29 tooth cluster ( P/U's 40 and later) is 3.11 to 1

 

Cool! thank you very much!