Checking rear ratio

[Synchro909]

Yes, but remember that I have the engine out of the car.

OK, then use vice grips on the drive shaft and turn it 2 turns - simple.

 

[old31]

Was the other wheel locked from any turning? If it didn't turn at all, then you have a 2.75 rear end ratio, but that can't be.
Are you sure it wasn't 3 and 3/4 turns, which is the standard 3.78 ratio?

Tom, you are correct. Basically I can not count. I redid the test and this is what I got.

With the engine out and trans in 3rd gear. 2 complete turns of the tire gave me 3 and 3/4 turns at the input shaft.

In 1st gear it gave me 11 and 3/4 turns at the trans with 2 tire turns.