8-1/4” rear gurus. Need a question answered.

1984 Dodge short passenger Van B150
318/904 8-1/4” with 11” brakes

I am wondering what could the possible gearing be for the van/ pickup rear axle in this 8-1/4”.
I am not ready to open it up yet as I am not ready to tear into it. It is a one wheel peel and the drive shaft turns just under two times for the axle to rotate once. I was holding the opposite axle still.
Tags show 2.9
3.505
Does not add up.
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