http://www.moyermade.com/chevyV8.html This may have been posted before, if it has been sorry ..still worth a another look for those that have seen it Miniture 327 that runs, he needs to work on the sound though
Cool. Some other dude did a running Ferrari 12cylinder. Sounds killer. He actually built the whole car in scale...
Here's another http://www.youtube.com/watch?v=ot0XG0hrJp4&feature=related Here's an Ardun http://www.youtube.com/watch?v=LmNiZ0yVLo8
There's a whole club of guys around here that build these things. They sound amazing in person. They come to the Goodguys events in Pleasanton. Their site is pretty limited, but they bring mini small blocks, flatheads and Hemis too! http://www.baemclub.com
Check out this site. http://www.nvbackflow.com/engines/ And this one. http://www.nvbackflow.com/inprogress/mpegs.htm
If you look on that link that KIRK put up, there is a guy that built a rotary engine that runs, it fits inside a coffee cup......very impressive. the crafmanshipmuseum link.