Stepper motor specs

Hi,
I'm a newbie wanting to find info on a few stepper motors a friend of
mine has, these are NEMA23's out of Wang printers.
Sanyo Denki Step-Syn

Larger motor
model 103g715-1240
this motor is 3.25" long including flange
2.6v, 3.1A

Smaller motor
model 103g770-2311
2"long
1.8v, 3A

I'm most interested in the larger motor, does anybody have a clue
what the torque of these motors is? I would test them, but my friend
is across the continent in the eastern U.S., while I'm in western
Canada.
Any help would be much appreciated
Regan