ChadLRyan:
Hi,
The biggest difference I see is that the DC units do not have the big openings below the radiator on the sides of the nose. They also look to have 4 louvered doors just ahead of the cab. I was using the 2008 'Diesel Spotters Guide' as a reference. As you may already know the traction motors are different as in the name designation.
Lucy (ha,hah!)
Chad,
There is NO difference in the traction motors. Both have D77 traction motors. There is an AC main alternator that produces AC, but it is converted to DC before it gets to the traction motors. This is similar to the 'Dash-2' line of engines at the time. That 'compartment' just forward of the cab is where the 'toilet' was installed. There was a 'cube' in the cab with the electrical gear.
Jim
Jim
