Hi, I have a set of heads i took off a 427t motor that i'm gonna use on a 505 tall deck motor i'm building. The casting # on these heads is 343772. They have LARGE oval ports and 2.06/1.72 valves. What is the largest set of valves i can put in these heads? 2.19/1.88? Does anyone know the combustion chamber volume on these heads? What is the intake runner volume?
and as always..thank you for your replies