GP40 Passsenger Units

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GP40 Passsenger Units

Postby R36 Combine Coach » Sun Jun 28, 2015 10:44 pm

Interested in what the model designations for GP40 passenger diesels stand for, including GP40PH-2, GP40FH-2, GP40H-2.

P: Passenger package equipped
H: HEP unit
F: F-series cowl (GP40FH units)
-2: rebuilt as DASH-2 spec
-2A: ?
-2B: ? (one roster sheet mentioned "light second order", referring to the 4200 (ex-PC) series)
-2C: ?
-2CAT: Caterpillar HEP (rebuilt F40s)
Since my friend continues to chain smoke nonstop, she is probably an Alco.
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Re: GP40 Passsenger Units

Postby CNJ Fan 4evr » Mon Jun 29, 2015 6:41 am

Soon they will have dash2 third to the seventh power minus mc squared. :-D :P :wink:
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Re: GP40 Passsenger Units

Postby CNJGeep » Mon Jun 29, 2015 9:28 am

R36 Combine Coach wrote:Interested in what the model designations for GP40 passenger diesels stand for, including GP40PH-2, GP40FH-2, GP40H-2.

P: Passenger package equipped
H: HEP unit
F: F-series cowl (GP40FH units)
-2: rebuilt as DASH-2 spec
-2A: ?
-2B: ? (one roster sheet mentioned "light second order", referring to the 4200 (ex-PC) series)
-2C: ?
-2CAT: Caterpillar HEP (rebuilt F40s)


-2A is a designator so the new order of GP40s was not confused with the GP40PH-2s (CNJs)
-2B is similar
-2C indicates (usually) a Cummins HEP plant
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Re: GP40 Passsenger Units

Postby R36 Combine Coach » Thu Jun 01, 2017 9:10 pm

CNJGeep wrote:-2A is a designator so the new order of GP40s was not confused with the GP40PH-2s (CNJs)
-2B is similar
-2C indicates (usually) a Cummins HEP plant

Then what is -2M?

I assume the difference between a GP40H-2 and a GP40PH-2 is lack of specific gearing for passenger service (no "P").
Since my friend continues to chain smoke nonstop, she is probably an Alco.
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Re: GP40 Passsenger Units

Postby CNJGeep » Fri Jun 02, 2017 12:42 pm

R36 Combine Coach wrote:
CNJGeep wrote:-2A is a designator so the new order of GP40s was not confused with the GP40PH-2s (CNJs)
-2B is similar
-2C indicates (usually) a Cummins HEP plant

Then what is -2M?

I assume the difference between a GP40H-2 and a GP40PH-2 is lack of specific gearing for passenger service (no "P").


M could stand for Microprocessor, or Modified. Either works. And your logic regarding the H is not sound, as CDOT classifies their GP40s as GP40H-2 and they are obviously geared for passenger. The H indicates HEP.

Also, two years later and this question is still burning in your mind??
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Re: GP40 Passsenger Units

Postby DutchRailnut » Fri Jun 02, 2017 3:20 pm

Conndot specifies their GP40 as :
6694-6699 6 GP40-2H AMF rebuilds
If Conductors are in charge, why are they promoted to be Engineer???

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