cam help

OK, no bashing you here, but, it sounds like you have no clue to what you want besides a rumbleing car.

Is it a V-8? How big is the engine?

A tip for selecting a cam with a choppy idle would be one ground on a 110 centerline. A 108 is good for a 340 or a 360. That will give it a real wild chop.

That is all the advice I can offer right now since everything else is an unknown. Whats the stock tranny?