It's a 1982 model. I beleive, since it is a Chicago built Le Tour, this means it was a hand built frame, despite the average frame material. I would have pointed you towards the same bike that Aaron mentions above. The fellow who built it, Steve, did a very nice job adapting it to his particular needs. It's also posted here:
http://www.schwinnbike.com/heritage/...793#post192793
Good luck with it.