Allegheny 2-6-6-6 Locomotive

I just got my Lionel Allegheny 2-6-6-6 Locomotive. I want my Allegheny 2-6-6-6 Locomotive to pull a very long line of Chesapeake & Ohio coal cars. Is there anything I can do to get more power out of the locomotive? Can anyone help me?

Did it come with traction tires? I would add them if you need them… Also note the track you use will effect the number of cars you can pull.