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Here is what I have for 62 Syncromesh.
F-85 (except 117 and 167) standard ratio was 3.07, optional expressway was N/A, optional mountain ratio was 3.36.

F-85 (117 and 167) standard ratio was 3.36, optional expressway was N/A, and optional mountain ratio was N/A.

F-85 (15" wheels) standard was 3.23, optional expressway was 3.07, and optional mountain was 3.36. Now on the Jetfire I'm not sure but I think the standard ratio was 3.36.

Here is what I have for 63 Hydramatic.
F-85 (except Cutlass) standard ratio was 3.23 with or without A/C, optional expressway ratio was 3.08 and optional mountain ratio was 3.36.

Cutlass and Jetfire standard ratio was 3.36 with or without A/C, optional expressway and mountain was N/A.

F-85 (15" wheels) standard ratio was 3.36 with or without A/C, optional expressway was 3.23, and optional mountain was N/A.

Here is what I have for 4 speed syncromesh.
F-85 (except Cutlass) standard ratio was 3.08, optional mountain ratio was 3.36, optional expressway ratio was N/A.

Cutlass and Jetfire standard ratio was 3.36, expressway and mountain ratio was N/A.

F-85 (15" wheels) standard ratio was 3.23, optional expressway ratio was 3.08, and optional mountain ratio was 3.36.

Cutlass Coupe (15" wheels) standard ratio was 3.36, optional expressway and mountain ratio was N/A.

Here is what I have for 3 speed syncromesh.
F-85 (except Cutlass) standard ratio was 3.08, optional mountain ratio was 3.36, optional expressway ratio was N/A.

Cutlass and Jetfire standard ratio was 3.36, optional expressway and mountain ratio was N/A.

F-85 (15" Wheels) standard ratio was 3.23, optional expressway ratio was 3.08, optional mountain ratio was 3.36.

Now this is what I have and as you know options could and most likely did change during the year so you could have a ratio that is different than what I listed. I would have to say that the 3.36 was the most common ratio with the 3.23 next.

I hope this helps you on ratios.
Bruce