While I have not even started my trucks new motor yet, I am thinking gas mileage and what can I do to improve it. I currently have a stock rebuilt 250, although the head has been milled .40 and has a near stock RV 1 cam. Anyways, I have held off on installing the stock manifolds thinking maybe a offy/webber and a header might help me get some better gas mileage. So, what should I do, stick with the monojet 1 barrel, a webber 32/36 or the 38/38. Overall power is not a major deciding factor, just best economy I can get out of a fullsize 4x4.
