A very rare beastie, known as "Experimental Locomotive 750" in the Diesel Spotter's Guide, an A-B-B-A set built by GE in 1954, tested on Erie until 1959, when the set was sold to UP. They were traded back to GE for some U50's. Originally, one pair of A-B units had 8-cylinder Cooper-Bessemer engines rated at 1200 hp each, while the other A-B set had the 12-cylinder version rated at 1800 hp each. After the tests were over, they were all repowered with 2000-hp V12s.
Supposedly, this loco was assigned to work in an area with (really) tight clearances, so EMD modified the roofline accordingly.
That was a result of Alco failing to bid on some loco requests. GE - their partner at the time - wasn't pleased and decided to develop their own locos. The rest is history.
The 567's in first-gen EMDs were reputed to be very loud. Six F7's in a row? Deafening! (back in 1975, the first time I visited Exporail as a kid, CN 7700 - the Westinghouse Visibility Cab switcher of 1930 - was doing some switching on the museum grounds. It had been repowered circa 1952 with a 380 hp Caterpillar V12. There were no mufflers on those things!) I can imagine some people today that complain about the noise of trains after they move in next to the tracks, with the din of six of these locos back in the day.
Yes and six of them WERE really loud but I would stand right next to the track as they passed by and it didn't scare me one bit! The power! Doug
