350/400 combo in my 56 F100. Driving it around today and all of a sudden I hear this loud ticking noise that get's fasted when I accelerate. So pulled over and it's coming from the dizzy area. Anyone have an idea what it is? The truck is running fine just that noise all of a sudden. The tranny is brand new with about 500 miles on it or so. Any help will be greatly appreciated. Thanks!