gearing vs mpg

I think the cam will determine it. If the engine is built properly, and if the cam comes in at 2200 (Which I have my doubts about), then the gearing has to keep the engine above that number. Not at it. That's where the power band starts. For decent milage, you need to be IN the range, not just barely touching it. This is one of the reasons to avoid the MP stuff. Was the cam degreed? I wouldnt go with anything higher than 3.23s knowing that cam is in there. You'll get better milage by turning the engine in it's efficiency range rather than just turning it slower and less efficient.