4 unit set of GP-40X s with westbound at Colton Tower         
UP changed their strategy somewhat going with high output 4 axle power. a departure from the "bigger is better" school of thought. it seems that they did not purchase to may of these, so perhaps they rethought this.
Date: 6/15/1980 Location: Colton, CA Views: 561 Collection Of:   Clark Gillis
Locomotives: UP 9002(GP40X) UP 9000(GP40X)    Author:  Clark Gillis
4 unit set of GP-40X s with westbound at Colton Tower
Picture Categories: Action This picture is part of album:  Union Pacific in Los Angeles area late 1970s
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User Comments
Name Type Comments Date
Alan Fricker General Weren't the GP40xs test beds for what became the GP50? 10/30/2015 9:32:08 PM
Clark Gillis General Pretty sure that was the case. The GP-40x were rated at 3500 horsepower vs 3000 for standard GP-40, so that would seem logical. 10/31/2015 10:51:49 AM

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