Power enough?

Hi,

I've come across a number of step motors with the following specs:
100 oz/in holding torque
200 steps per rev.
1.65Vdc @ 4.7A

Now, I would like to use these to convert my lathe (standard 9x20)
and mill (WABECO 1200) to CNC. I fear that the 100oz/in is a little
on the low side - can any of you enlighten me on this?

best regards
Peter