Watco Locomotives

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Active Member
I am new here so It may be already covered. The question I have is, Watco has a locomotive that I can't figure out, WAMX 1004 they say it is a GP10 but it looks like a GP7 and I have compared that locomotive to the GP7s they have and they all look the same can some shed some light on this.

Midsouth fan

Some rebuilders give the locomotive a new designation to indicate that it is different than the original.


What makes a GP10 what they are is the horst air filter on the roof behind the cab. Not sure that Conrail's came with this though.

Here's a pic of WAMX 802. It is an SW8 built new originally for the Louisiana & North West RR circa 1950.
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