Six pack to The summit

I would like to start this thread for the six pack enthusiasts and gurus on this form. Six pack seem to be a bit of a hoodoo voodoo science. I have no interest in negative opinions of the setup only in helping those running them or that are interested in them understand and improve their systems. I will be the first to say I am just learning, but I love the setup and would love to hear any helpful facts or theories. I will start with this question what happens inside a six-pack manifold at wide open throttle I have heard the outboard carburetors take over does anyone know the percentage? Is that true? So let's begin