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From Bluebirds to Canaries
Part 2 - The Handy MoPac/UP Diesel Converter

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Have you ever noticed that SD40-2 without dynamic brakes, or the B23-7 with the distinctive rear hood passing by on your local UP line? It's a good bet they both share a MoPac heritage. There's a way to find out -see the information below. Print the chart out and take it along with you on your next train-chasing trip. Happy Hunting!

Roster Updated with Jan. 1, 2001 data. Currently UP is still in the process of re-numbering each model - all locomotives are expected to be completed by 2002.

Former MoPac 2254 pauses between jobs at its Union, Nebraska yard. The GP38-2 has been newly re-numbered by Union Pacific. 3/31/01

Trace Locos and Equipment on the UP System
UPRR-Public Equipment Trace

 

 


UP Locomotive Renumbering 1999-2002
Union Pacific December 1999-2002 Renumbering Plan - Source:UPRR and Don Strack

New
Old
Previous
Model
Qty/Notes
UP 100-184 UP 100-184 MP 4600-4684 B23-7 83
UP 200-254 UP 200-254 MP 4800-4854 B30-7A 55
UP 257-259 UP 257-259 MP 4667-4669 B23-7M 3
UP 280 UP 2166 MP 2166 GP38-2 1
UP 300-328
UP 330-348
  MP Various GP38-2  
UP 349-363 UP 2076-2108 MP 2076-2108 GP38-2  
UP 611-834 UP 2111-2334 MP 2111-2334 GP38-2 223
UP 890-898 UP 2390-2398 CEI 100-108 GP38-2 9
UP 960-989
UP 1658-1687
MP 3500-3529 GP 50
UP 1555-1714 UP 1555-1714 MP 1555-1714 GP15-1
UP 1715-1744 UP 1715-1744 MP 1715-1744 GP15AC
UP 1800-1828 UP 1800-1828 MP 2009-2073 GP38-2
UP 1830-1846 UP 1830-1846 MP 2075-2110 GP38-2 16
UP 2076-2108 UP 2076-2108 MP 2076-2108 GP38-2 14
UP 2111-2334 UP 2111-2334 MP 2111-2334 GP38-2

New
Old
Previous
Model
Qty/Notes
UP 2603-2659 UP 9000-9059 MP 9000-9059 C36-7
UP 2816-2823 UP 2816-2823 MP Various SD40-2 modified by UP to SD 38-2
UP 2825-2829 UP 2825-2829 MP Various SD40-2 modified by UP to SD 38-2
UP 2836-2846 UP 2836-2846 MP Various SD40-2 modified by UP to SD 38-2
UP 3905-3973 UP 3905-3973 MP 6005-6073 SD40-2 69, 10 retired
UP 4115-4163 UP 4115-4163 MP 3115-3163 SD40-2 27, 7 retired, 7 rebuilt to SD38-2R
UP 4202-4321 UP 4202-4321 MP 3202-3321 SD40-2 46, 42 retired, 28 rebuilt to SD38-2R
UP 5000-5059 UP 5000-5059 MP 5000-5059 SD50 12 retired
UP 7942-7999 UP 400-531 MP 9000-9059 C36-7
UP 9000-9059 UP 9000-9059 MP 9000-9059 C36-7
UP 9881 UP 5001 MP 5001 SD50 1, to be numbered back to UP 5001
UP 9882-9950 UP 4115-4320 MP 3115-3320 SD40-2 7 retired

New
Old
Previous
Model
Qty/Notes
UPY 451 UP 1666 MP 1666 GP15-1 1, numbered 451 to avoid the 666 number
UPY 555-714 UP 1555-1714 MP 1555-1714 GP15-1 159, UPY 1666 is left blank
UPY 715-744 UP 1715-1744 MP 1715-1744 GP15AC 30
UPY 816-823 UP 2816-2823 MP Various SD38-2 8, ex-MP SD40-2's converted to SD38-2 by UP
UPY 825-829 UP 2825-2829 MP Various SD38-2 5, SD40-2's converted to SD38-2
UPY 836-846 UP 2836-2846 MP Various SD38-2 11, SD40-2's converted to SD38-2
UPY 847-854   MP Various SD38-2 SD40-2's converted to SD38-2
UPY 903-925 S 9-531 MP 1401-1423 Yard Slug 23, 3 retired
UPY 1330-1354 UP 1330-1354 MP 1530-1554 MP15DC 25
UPY 1356-1392 UP 1356-1392 MP 1356-1392 MP15DC 37

Total ex-MP on UP System
Total at Merger
Total as of Jan. 1, 2001
1,568 units
987 units




Just before Christmas 1999, a UP hump engine bearing the reporting marks "UPY" rolled out of North Little Rock's paint shop, the first to bear new road marks for low-horsepower units and part of a larger effort to renumber morethan 3,000 locomotives.

The effort involves changing the road marks on CNW, DRGW, SP and SSW road units to "UP," he said. All switcher-type units, plus hump engines andGP15s, will be assigned "UPY" reporting marks. Most of these units also will have new road numbers assigned.

The accelerated renumbering is expected to take up to three years.

The National Motor Freight Traffic Association (NMFTA) granted UP a one-time, special exemption for the new UPY reporting marks designation, tobe applied to about 700 switchers, GP15s and SD38-2s. That, in turn, freesup 673 UP number slots for road units.

Information on the reporting marks and renumbering project will be made available, probably on the UP Employee website.


 

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Sources: Missouri Pacific Diesel Power by Kevin EuDaly

Don Strack - http://utahrails.net/all-time/up-x-mp-index.htm

Union Pacific R.R.

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