This may help you out
FORD CODES and SERIAL NUMBERS
Tractor model 45011G means:
4..........4000series
50.........inustrial version
1...........diesel
1..........No PTO
G..........Transmission code.
The "G" transmission code doesnt show up on ANYTHING I could find, but Dad has a 4500 TLB with that same trans code. It is a 4F/4R transmission.
There is a flat on the engine casting located just above the starter. It will have that 45011G model number. It will also have the date code where you can use the link I provided to tell exactally when it was made.
And yes, the hoes are quite large and powerful on them machines. As well as the loader. Do you know what model the BH is?? They made a 750, 753, and 755 attachment. They dug to 10ft, 13ft, and 15ft respectivly. ID'ing them is easy, measure the diameter of the main boom and dipperstic cylinders. The 750 had 3.5" cylinders, the 753-4" and the 755-4.5" cylinders.
And if it has the 740 loader on it, them had some massive cylinders as well.
So.....after all that, do you got any pics????