LV diesel classification?

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LV diesel classification?

Postby Allen Hazen » Sun Oct 02, 2016 10:10 pm

A recently posted photo of U23B 508 on the "Fallen Flags" site
http://www.rr-fallenflags.org/lv/lv0508o02.jpg
shows the railroad's class on the cab side: GFM-22. "GF" would, I assume, mean General Electric - Freight, and the 22 would be the horsepower in hundreds rounded down to the nearest hundred: compare the Alco C628's Lehigh Valley class AF-27. But what is the "M" for?
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Re: LV diesel classification?

Postby Engineer Spike » Thu Jun 29, 2017 11:17 pm

Maybe it is for MU capability. The other thought is the M is for a modification to a similar model. The C628 had the original, and ex Monon. There might have been slight differences between the two. Some railroads kept the same class for 1000 hp switchers. When EMD switched from NW2, SW7, SW9, SW 1200, they were essentially the same. There was a thread about how they re passed the GP9, and GP18, since they were so similar.
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