Gear Ratio

[oldgas]

What did the 1956 Ford Victoria with a ford automatic transmission & a 292 2 barrel T pot Y-block have installed for best mileage performance rear diff gear ratio?
Thank you for your time.
Oldgas

 

[KULTULZ]

See if the attached ILL shows large enough to read -

 

[paul2748]

56 sedans with Fordo had a 3.22 rear end as standard and a 3.55 as optional

 

[oldgas]

Thank you Sir for the rear Diff information:
Cheers Oldgas.