I have acquired a 4 speed T-10 tranny and was wondering if anyone can help figure the numbers out:

Numbers on iron main case:
T-101B
W.G. DIV
Date K 1961
C192-2

Aluminum Tail shaft:
T10-7B
WG Div
10-9-62

Would like to know the gear ratio before I install it in a car.

T101B cast iron case used from 1959 through 1961.
T10-7B tail housing(1960-61 Pass & Vette)

Here's the ratios:
http://www.dandltransmission.com/borgratio.html

To find out the gear ratio, You need to count the grooves on the input shaft (front).
http://www.dandltransmission.com/borgratio.html

Thanks guys! I have one groove on the input shaft so b the chart It's a Wide Ratio, 2:54,1:90,1:51, 1:00 gear set. I couldn't have wished for anything better. Excepy maybe a Muncie M-21.