stupid answerSeptember 23 2010 at 5:07 PM
from IP address 220.127.116.11
Response to stupid question
I think there is one exhaust port hidden by the manidold. I'm thinking back to the old days and I think a couple of the intake ports are siameased.
I remember the Chevy six was the first valve job that the boss trusted me to do. It was for the shop/plow truck.