mufflers on 350 magnum
 

hey guys I am making some mufflers for my 211 liberator it has a 350 magnum with 4" thru hull. I want to quiet it down as much as possible but not hurt perforance too much. I already made one set out of aluminum that worked good but did not quiet it down as much as i would like. I have now made a second set with smaller holes in them. It seems to me the 4" exhaust is a rather large tube for a 350 mag anyone have any experience with 350 mags and mufflers thanx