C40-9W vs. C44-9W

[Morpar]

Does anyone know the major spotting differences between the C40-9W and the C44-9W? I took some decent pictures of an NS C40-9W recently and would like to model it, I'm just not sure if I am looking at a major rework to make it look right or just adding the right details. I have an Athearn C44-9W that I was wanting to use as the basis for this. Any help from the NS gurus would be appreciated also, as in what details are needed to make it look right or any other suggestions. Thanks in advance.

[Anonymous]

The only difference in the c40-9w is that it has a 4000 HP prime mover vs. the 4400 HP engine in the c44-9w. Hence the numbers "40" or "44" in their models. Externally, they are identical. NS is the only railroad that buys the c40. There are several variables that need to be considered when modeling GE locomotives. Some of them are number board location, number of steps on the walkway, and whether the handrails at the ends of the loco. are "wide" or "narrow". These details vary from railroad to railroad. If you find a c44-9w body that matches these things with your NS photos, then it is just a matter of adding small detail parts, and the model will look just the same as a c40-9w. Hopefully someone else can give you more "NS specific" ideas about details. Hope that helps! Kevin

[nfmisso]

There is no difference.

The power difference is due to different settings of the diesel engine's governor. Mechanically it is the same engine. NS choose to rate thiers are 4000hp to (hopefully) increase life and reduce fuel consumption. But NS has been (maybe done by now) at various horsepower levels from less than 4000hp to over 4500hp, to try to determine which makes most sense overall for them.