Stop in for a cup of coffee

TORQUEFLITE A727/A904 3-SPEED AUTOMATIC
Axle Ratio
4.56 4.10 3.73 3.55 3.23 3.08
Trans Ratio Final Drive Ratio
1st
2.45 11.17 10.05 9.14 8.70 7.91 7.55
Over
1.91 8.71 7.84 7.13 6.78 6.17 5.89
2nd
1.45 6.61 5.95 5.41 5.15 4.68 4.47
Over
1.13 5.16 4.64 4.22 4.01 3.65 3.49
3rd
1.00 4.56 4.10 3.73 3.55 3.23 3.08
Over
0.78 3.56 3.20 2.91 2.77 2.52 2.40
So 410 rear by the way I read that gives you an o.d. of 356.
But you still have to factor in tire dia.