I have a stock 350 except for a Edelbrock performer intake, Edelbrock 600 carb. and Sanderson headers. I'm not looking for optimal performance but want a cam that will give a radical sound and idle. I plan to have the stock heads ported but what is the largest cam that I can install without worring about piston to valve clearance. (OR), what will stock heads need to take a higher lift and duration? Most streetrods I see have a mild tone but I want a wild sound that will turn some heads.