I did the 8.25 /3.55 axle last year .... the swap was Night and Day for drivability ...
last fall I picked up a R10 overdrive transmission from a 59 Plymouth.. it came with the bell housing
I'm now waffeling on whether to install the R10 trans or get a A833
the second gear .. ratio in the 833 looks like it would be a better (around town ) gear match
(aka) a long second
Stock A833OD Effective gear ratios
Stock A833OD
4.10 4.10 3.73 3.55
1st 2.57 3.09 10.54 12.67 11.53 10.97
2nd 1.83 1.67 7.50 6.85 6.23 5.99
3rd 1.00 1.00 4.10 4.10 3.73 3.73
OD 0.73 ----- 2.99 2.72 2.60