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No doubt about it, the old 7.3 school bus motor is the most efficient of the PowerStrokes. The 6.0 has EGR. The 6.4 has EGR and DPF. Both those items rob efficency and the 444E has neither.
Once again it is proven that the best mod is done to the nut behind the wheel.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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