Passenger/freight GG1's

[cpr4200]

I'm thinking that PRR mail and express trains would have been pulled by GG1's from the passenger pool. Would that be right? I haven't found a roster that tells where the freight units ended and passenger units started, but I did find a site that divides its photos between 4800-4880 and 4881-4938. Freight and passenger? Also read that freight units had 17-notch throttles while passenger units had 22 notches. Clarification and commentary welcomed. ~ Walt

[jonklein611]

In the mid-1950s, with declining demand for passenger train service, GG1s 4801–4857 were re-geared for a maximum speed of 90 miles per hour (140 km/h) and placed in freight service. They initially retained their train-heating steam generator, and were recalled to passenger service for holiday-season mail trains and 'Passenger Extras' such as those run for the annual Army–Navy football game in Philadelphia. Volkmer, William D. (1991). Pennsy Electric Years. Edison, New Jersey: Morning Sun Books. ISBN 1-878887-01-7