dynamometer shops?

Anybody know how to find places that will lend you access to a dyno? I am
contemplating doing all the fine tuning on my new engine while it is out of
the car. The car is a far ways off, and I have the urge to tweak. The yellow
pages were no help. These "performance" shops some people speak of, are non
existent locally. My engine shop couldn't recommend a place either. I know
the local community college has one, but I doubt they are willing to help
out.

Thanks

Toby