In the head, just one port if I recall correctly, I haven't played with a big block in 20 years. However, in the stock application the passenger side manifold, with the flapper in the outlet port directs all 4 cylinders exhaust thru the intake.
I can't find a good drawing of how it works.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
