RE: Centennial locos
From the 1966 Car and Locomotive Cyclopedia
DD-40A was EMD's designation for the standard nose version, a picture showing a unit with GM added on the cab side is included with the stats. These are probably very close to the DD-35B
Length between pulling faces: 88'-2"
Truck (each) 17'-1.5"
Distance between truck centers: 55'-0"
Weight fully loaded: 520,000lbs
Horsepower, continuous rating: 6000
Fuel capacity 5200 gals
From the 1970 Car and Locomotive Cyclopedia
DD-40x was EMD's designation for the wide nose version purchased and operated by the UP an in service photo of the 6900 is included with basic stats in the caption.
Length over couplers: 98'-5"
Weight fully loaded: 540,000lbs
Horsepower, continuous rating: 6600
Fuel capacity: 8280 gals.
These are big locomotives. in 1:29 the DD-40X would be 41inches long.
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