scotty b:

You can check the ratios easily by selecting 1st gear, then counting # of turns of the input shaft for one turn of the output shaft. With the clutch disc on the input shaft the last partial turn can be accurately judged. Be looking for ~3.9:1.

What's the engine #? Stamped on the top left surface of the block, aft of the distributor. 110.9xx?

Flywheels look to be from 617 diesels. What do you know of the engine history?