318

Magnum heads need a Magnum intake (like a Edelbrock Air Gap). You need
AMC V-8 lifters and special length pushrods(both from Mopar Performance).
The magnum heads oil through the pushrods instead of through the head and
rocker shaft. The magnum heads have a smaller combustion chamber which raises your 318's compression to over 9-1. They also have higher flowing ports that respond well to port matching and bowl blending. When you choose a cam choose one with a little more lift and duration on the exhaust side. A windage tray for the oil pan is supposed to give you a few extra
horses but seems to gain more on stroker motors. Good luck and keep us posted on your progress. Mike