Simple short inquiry. Did New Haven locomotives ever run west of Penn Station, NY? Don't mean in normal daily service but if there was a shortage of Pennsy locos, etc.
My short answer would have to be a no. I doubt very much if the PRR ever ran out of GG-1's to the point where they would have to run a New Haven motor west. If anything we would run out of motors but not until very close to the takeover in 1969 did we ever use a PRR motor on a train out of Penn Station. Of course we know they used one or more of our EP-3's on test runs when they were trying to find a good arrangement for a motor to run to Washington and in our 350's they finally found the right motor for the job. During Penn Central tests were conducted with both the 370's and the FL-9's on trains west out of Penn Station but in both cases they found the GG-1 superior. The 370's had enough trouble making the run between New York and New Haven without doing the additional miles to Washington. In the case of the FL-9's in order to run them to Washington they would have had to add a considerable amount of time to the schedules between New York and Washington and even then they would have had considerable problems running them there. The GG-1 was anything but comfortable to work on but they were had to exceed in performance in the 50's, 60's and 70's.
Noel Weaver