TCM H0105 speed sensor pulses per mile doesn't match ECM H0101 vss pulses per mile

[Micheal Tomac]

In a stock Allison 5 speed TCM H0105 is 4000 and in the Duramax LB7 ECM H0101 is 101605. Why don't these two match?

Also why is the TCM final drive ratio H0103 4.10 when all Duramax truck have 3.73 gears

 

[slipclutchms]

I have always wondered this as well haha