My new project: Pig Roaster, Rotisserie Motor suggestions please

Brian thanks for the quick reply. Actually yes it will be the entire pig, we usually roast about a 100 lb pig. We will have bearings for the rotissrie shaft to run on, basically 2 large sheilded bearings per side spaced just far enough apart so the shaft sits between them. Balance isnt a huge issue as the turning speed is so low it doesnt really create a big problem.

I had though of using an old furnace motor or washer motor to run this, but arent most of those motors in the 1750 rpm range or so? To get down to 2 rpm that would be approx. 1000:1 gear reduction and I am not sure how to accomplish that efficiently. How much can I reduce the rated motor rpm with a dimmer switch?