30's model top loader transmission codes

Hi all I'm trying to track down some 1930-40's trans code #'s does any one have a chart showing years of Id#'s .
Mine is a toploader type.
I can see the numbers just need to know what they mean.
I would like to know this so I could get the final drive ratio's.

Thank you

 

Final drive ratio is going to be one to one, regardless of the trans or the make unless it has some weird overdrive high gear

 

Check these sites. Plenty of info.

http://www.vanpeltsales.com/FH_web/flathead_home.htm

http://www.vanpeltsales.com/FH_web/flathead_trans-gearratios.htm

http://www.btc-bci.com/~billben/trans.htm