Railpictures.ca - John Parnell photo, J.Pittman collection Photo: UP 8000 was the first production SD90MAC, with the well-proven 4300 HP EMD V16 710G3B 2-stroke diesel engine installed “temporarily” until such time as the intended 6000 HP EMD GM16V265 4-stroke diesel was sufficiently developed. It is seen here on the GMDD test track beside CP’s Galt Subdivision. The 265-H engine had far more problems than anticipated, so over 400 more SD90MAC locomotives were built with the 710G3B engine, becoming known as “SD9043MAC”. Original customers were UP, CP, and CEFX. None of the SD9043MAC units were ever converted to the 6000 HP engine by a railroad, because production SD90MAC-H locomotives with the 265-H engine were so unsuccessful. Over 100 ex-UP and ex-CEFX SD9043MAC locomotives have been remanufactured to SD70ACU for Norfolk Southern. Canadian Pacific is getting the same thing done with their SD9043MAC fleet. | Railpictures.ca – Canadian Railway Photography

UP 8000 was the first production SD90MAC, with the well-proven 4300 HP EMD V16 710G3B 2-stroke diesel engine installed "temporarily" until such time as the intended 6000 HP EMD GM16V265 4-stroke diesel was sufficiently developed. It is seen here on the GMDD test track beside CP's Galt Subdivision.
The 265-H engine had far more problems than anticipated, so over 400 more SD90MAC locomotives were built with the 710G3B engine, becoming known as "SD9043MAC". Original customers were UP, CP, and CEFX.
None of the SD9043MAC units were ever converted to the 6000 HP engine by a railroad, because production SD90MAC-H locomotives with the 265-H engine were so unsuccessful.
Over 100 ex-UP and ex-CEFX SD9043MAC locomotives have been remanufactured to SD70ACU for Norfolk Southern. Canadian Pacific is getting the same thing done with their SD9043MAC fleet.

Caption: UP 8000 was the first production SD90MAC, with the well-proven 4300 HP EMD V16 710G3B 2-stroke diesel engine installed "temporarily" until such time as the intended 6000 HP EMD GM16V265 4-stroke diesel was sufficiently developed. It is seen here on the GMDD test track beside CP's Galt Subdivision.

The 265-H engine had far more problems than anticipated, so over 400 more SD90MAC locomotives were built with the 710G3B engine, becoming known as "SD9043MAC". Original customers were UP, CP, and CEFX.
None of the SD9043MAC units were ever converted to the 6000 HP engine by a railroad, because production SD90MAC-H locomotives with the 265-H engine were so unsuccessful.

Over 100 ex-UP and ex-CEFX SD9043MAC locomotives have been remanufactured to SD70ACU for Norfolk Southern.
Canadian Pacific is getting the same thing done with their SD9043MAC fleet.

Photographer:	John Parnell photo, J.Pittman collection [17] (more) (contact)
Date:	October 1995 (search)
Railway:	Union Pacific (search)
Reporting Marks:	UP 8000 (search)
Train Symbol:	Not Provided
Subdivision/SNS:	GMDD test track (search)
City/Town:	London (search)
Province:	Ontario (search)
Share Link:	http://www.railpictures.ca/?attachment_id=38873

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2 Comments

Stephen C. Host

September 9, 2019 at 9:24 pm

Where is 8000 now?
JEParnell

September 10, 2019 at 12:26 am

UP 8000 got renumbered UP 3470 (with UP 8000 numbers reused for new GE ES44ac). In Sept 2014 UP 3470 was sold to NS becoming NS 7230. It got remanufactured into an SD70ACU, keeping same unit number NS 7230.
(Based on info found in rrpicturearchives )

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Stephen C. Host

September 9, 2019 at 9:24 pm

Where is 8000 now?

JEParnell

September 10, 2019 at 12:26 am

UP 8000 got renumbered UP 3470 (with UP 8000 numbers reused for new GE ES44ac). In Sept 2014 UP 3470 was sold to NS becoming NS 7230. It got remanufactured into an SD70ACU, keeping same unit number NS 7230.
(Based on info found in rrpicturearchives )