Quote Originally Posted by Henry Rifle
By the way, you can get a rough idle by messing with the fuel mixture. No need for a cam. Besides, you just slammed the guy who is the most able to provide you info.
The method most used by myself and other well informed 15-16 year old hot rod experts was to utilize a blown-out muffler and pull off a plug wire or two. It made my '39 Dodge four-door with a stock flathead six sound like a real bear.

Jim