This is a nice video showing a crate engine build. I wonder how much HP you can crank though one of those?
[youtube]http://www.youtube.com/watch?feature=player_detailpage&v=sCOocyTmakM[/youtube]
[youtube]http://www.youtube.com/watch?feature=player_detailpage&v=sCOocyTmakM[/youtube]