83gbody,
To answer your question I and others need more info. We know it is a 305, what is the use? Daily driver? Weekend warrior? Do you have a stock stall speed converter? What rear gear do you have? Do you have headers, intake, aftermarket carb? To get a lopey mean sound in a 305 will mean that you are going to sacrifice the benefits of having an aftermarket cam in your engine. ASSUMING your heads are stock, stock low compression, you would be best suited with a cam just a step or two above stock, which WON'T lope and sound like a mean machine. But like I said we need more info.If you aren't gonna be satisfied with a cam that performs well but doesn't have big sound then call up one of the cam manufactures with all the answers to the above questions and they will spec out something for you. Good Luck!