Another dumb question?

[nfmisso]

Bob;

The GP40X locomotives were the pre-production prototypes for the GP50.

GP45 would not have been logical, as the 45 designation was for V20 engined locomotives. The 40 series and 50 series were V16 engined.

[Anonymous]

Been wondering, if the EMD GP40X had caught on would it have been called the GP45? If they paralleled the SD series that would be the logical designation.

Bob DeWoody