Boeing has been marketing the 737 retread cargo version for over 2 years and have not gotten much traction in the marketplace. The have recenty talked to Airborne about the same thing. The 757 can carry a shade less than the DC-8 so it is not a comparable replacement for the 727 or DC-9.
Bigger isn't always better. The integrators (UPS, FDX, ABF/DHL) can't always use the extra capacity, especially for stops closer to the hubs. Unfortunately it is not a matter of just adding more stops to fill up the plane. To make the sort and morning delivers you can only do about 3 legs in or out (max).
Though the cargo doors and tubes are a plus, the planes still have their old motors. So in my mind it is hard to justify buying a fleet of new-old planes if the buyer doesn't get the advantage of newer technology fuel efficiency. Maybe BA will discount them enough to start peddling them.
Bigger isn't always better. The integrators (UPS, FDX, ABF/DHL) can't always use the extra capacity, especially for stops closer to the hubs. Unfortunately it is not a matter of just adding more stops to fill up the plane. To make the sort and morning delivers you can only do about 3 legs in or out (max).
Though the cargo doors and tubes are a plus, the planes still have their old motors. So in my mind it is hard to justify buying a fleet of new-old planes if the buyer doesn't get the advantage of newer technology fuel efficiency. Maybe BA will discount them enough to start peddling them.