"Whitechapel Gods" by S.M. Peters
Here is the blurb from the back of the book:
"In Victorian London, the Whitechapel section has been cut of, enclosed by an impassable wall, and is now ruled by two mysterious mechanical gods. Mama Engine is the goddess of sentiment, a mother to her believers. Grandfather Clock represents logic and precision.
"A few years have passed since the Uprising, when humans fought the gold cloaks, the black cloaks, and even the vicious Boiler Men, the brutal police force responsible for keeping humans in check. Today, Whitechapel is a mechanized, steam-driven hell, but a few brave veterans of the Uprising have formed a new resistance, and they are gathered for another attack. [sic] For now they have a secret weapon that may finally free them... or kill them."
Picked it up a couple years ago off the bargain table at my local book store and enjoyed it quite a bit. There's a disease people get that turns their bodies into machines. It's kinda cool. I've never read or indeed seen anything else by the author, but I would totally get another of his books if I found one.
Also, I haven't read it, but I have heard "Boneshaker" by Cherie Priest is good.
I've always been more of a Cyberpunk guy myself, but that subset of fiction is so saturated by samey Gibson wannabes that it is hard to find a good book set apart from the boring ones.