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Union Pacific Railroad

Roster of Diesel and Turbine Locomotives, 1934-2009

This page was last updated on February 15, 2014.

(Return to UP Diesel Roster Index Page)

Roster Listing

GE C30-7 -- 2 units
3000 horsepower; C-C trucks; 395,000 pounds operating weight

Road
Number
Previous
Number
Builder
Date
Builder
Number
Date To
7874 Series
Date
Retired
Notes
UP 7883 UP 423 Jul 1978 41790 5 Oct 2000 25 Sep 2000 1
UP 7886 UP 2431 Dec 1978 42094 24 Oct 2000 24 May 2001 2

General Notes:

a. Original total of 140 units; part of 7874-7941 group; total of five units renumbered prior to retirement of all C30-7s on UP.
b. Total of 86 units renumbered to UP 400-531 group; all but the above four units were retired from the 400-531 group.
c. Total of 54 units remain in UP 2400-2539 group; all but the above single unit were retired from the 2400-2539 group.
d. Total of 68 units from both 400-531 and 2400-2539 number groups assigned to UP 7874-7941 series, five units renumbered.
e. Individual unit histories:
  Road
Number
First
Number
Second
Number
Date To
400 Series
  UP 7883 UP 2423 UP 423 7 Jan 1999
  UP 7886 UP 2431    

Notes:

1. UP 7883 was renumbered from UP 423 on 5 October 2000 to clear the UP 423 number for use by renumbered GP38-2 1923 (UP 423 was retired on 25 September 2000 but was still on property); renumbered again, to temporary WP number, as WP 7883 on 22 September 2003.
2. UP 7886 was renumbered from UP 2431 on 24 October 2000 to clear the UP 2431 number for use by renumbered SD60M 6276; renumbered again, to temporary WP number, as WP 7886 on 13 October 2003.
   

SD40-2/SD40T-2 -- 42 units
3000 horsepower; C-C trucks

Road
Number
Previous
Number
Builder
Date
Builder
Number
Model Date First
Retired
Date To
7875 Series
Date
Retired
Notes
UP 7875 UP 3712 Jan 1980 796297-54 SD40-2 3 Oct 2003 3 Oct 2003 14 Sep 2007  
UP 7876 SP 8547 Jan 1979 786174-49 SD40T-2 19 Dec 2001 3 Oct 2003 16 Jul 2007  
UP 7877 UP 8614 Jul 1975 756046-1 SD40T-2 3 Oct 2003 3 Oct 2003 16 Jul 2007  
UP 7878 UP 9945 Dec 1979 796308-8 SD40-2 16 Oct 2003 16 Oct 2003 24 Jan 2008  
UP 7879 UP 9936 May 1979 786178-15 SD40-2 3 Oct 2003 3 Oct 2003 16 Jul 2007 1
UP 7880 UP 3779 Oct 1980 796345-11 SD40-2 8 Oct 2003 8 Oct 2003 30 Dec 2004  
UP 7881 UP 9948 Apr 1980 796311-4 SD40-2 24 Oct 2003 24 Oct 2003 16 Jul 2007  
UP 7882 UP 3649 Dec 1979 786263-41 SD40-2 19 Dec 2002 24 Oct 2003 24 Jan 2008  
UP 7883 UP 3171 Feb 1972 7334-49 SD40-2 14 Oct 2003 31 Oct 2003 16 Jul 2007  
UP 7884 UP B4145 Feb 1974 73748-7 SD40-2 31 Jul 2001 31 Oct 2003 16 Jul 2007  
UP 7885 UP 9887 Jan 1974 73648-15 SD40-2 7 Nov 2003 7 Nov 2003 24 Jan 2008  
UP 7886 UP 3414 Mar 1978 776088-5 SD40-2 31 Oct 2002 7 Nov 2003 16 Jul 2007  
UP 7887 UP B3455 Apr 1978 776088-46 SD40-2 28 Dec 2000 14 Nov 2003 24 Jan 2008  
UP 7888 UP 3434 Apr 1978 776088-25 SD40-2 28 Nov 2001 31 Oct 2003 24 Jan 2008  
UP 7889 UP B4313 Apr 1980 786269-2 SD40-2 29 Nov 2000 21 Nov 2003 2 Dec 2005 2
UP 7890 UP 3803 Nov 1980 796345-35 SD40-2 15 Jul 2002 21 Nov 2003   3
UP 7891 UP 3622 Oct 1979 786263-14 SD40-2 22 Nov 2000 14 Nov 2003   4
UP 7892 UP 9919 Aug 1975 75616-13 SD40-2 15 Dec 2003 15 Dec 2003 25 May 2004  
UP 7893 UP 3392 Apr 1977 766056-58 SD40-2 14 Nov 2003 14 Nov 2003   5
UP 7894 UP 3219 Apr 1973 72684-17 SD40-2 26 Nov 2003 26 Nov 2003   6
UP 7895 UP 3277 Jul 1974 73661-35 SD40-2 26 Nov 2003 26 Nov 2003 14 Nov 2007  
UP 7896 UP 3257 Jun 1974 73661-15 SD40-2 26 Nov 2003 26 Nov 2003   7
UP 7897 WP 3960 Apr 1980 796311-7 SD40-2 27 Feb 2001 23 Nov 2003 28 Jul 2004  
UP 7898 UP B4216 Aug 1978 776099-1 SD40-2 24 May 2001 19 Dec 2003 24 Jan 2008  
UP 7899 UP 3417 Mar 1978 776088-8 SD40-2 14 Nov 2003 14 Nov 2003   8
UP 7900 UP B4271 May 1979 786178-6 SD40-2 29 Jan 2001 15 Dec 2003 16 Jul 2007  
UP 7901 UP 3648 Dec 1979 786263-40 SD40-2 21 Nov 2003 21 Nov 2003 24 Jan 2008  
UP 7902 UP 9907 Mar 1974 73748-20 SD40-2 23 Dec 2003 23 Dec 2003 14 Sep 2007  
UP 7903 UP 8946 Aug 1978 776099-2 SD40-2 5 Dec 2003 5 Dec 2003 16 Jul 2007  
UP 7904 UP 3546 Mar 1979 786170-48 SD40-2 21 Nov 2003 21 Nov 2003 24 Jan 2008  
UP 7905 SP 8566 Feb 1979 786174-68 SD40T-2 31 Jan 2003 26 Nov 2003 24 Jan 2008  
UP 7906 SP 8275 Jun 1980 786265-46 SD40T-2 5 Dec 2003 5 Dec 2003 15 Dec 2005  
UP 7907 UP 3821 Sep 1979 786228-2 SD40-2 21 Dec 2001 5 Dec 2003 25 May 2004
14 Sep 2007
9
UP 7908 UP 8953 Aug 1978 776099-15 SD40-2 24 May 2001 23 Dec 2003 16 Jul 2007  
UP 7909 UP 3829 Jul 1980 796305-3 SD40-2 29 Nov 2001 26 Jan 2004   10
UP 7910 UP 3280 Jul 1974 73661-38 SD40-2 23 Jan 2004 23 Jan 2004   11
UP 7911 UP 9896 Feb 1974 73748-9 SD40-2 29 Jan 2004 29 Jan 2004 16 Jul 2007  
UP 7912 UP 3748 Feb 1980 796297-90 SD40-2 9 Jan 2004 9 Jan 2004   12
UP 7913 UP 3233 May 1973 72684-31 SD40-2 10 Mar 2004 10 Mar 2004 14 Sep 2007  
UP 7914 UP 3283 Jul 1974 73661-41 SD40-2 7 May 2004 7 May 2004   13
UP 7915 UP 8938 Jan 1974 73648-22 SD40-2   3 Oct 2005 24 Jan 2008  
UP 7916 UP 3613 Sep 1979 786263-5 SD40-2 23 Jul 2004 23 Jul 2004 2 Apr 2008 14

General Notes:

a. All 42 units leased from Progress Rail as a short-term lease (Peak Power) fleet during times of motive power shortage.
b. All 42 units renumbered beginning in early October 2003 from retired SD40-2 and SD40T-2 units at either VMV in Paducah, Kentucky, or Progress Rail in Somerset, Texas.
c. Units retired prior to startup of Peak Power lease, were out of service and needed repairs; after buying them, Progress Rail made the needed repairs and returned those units to operating status; units retired on same date as their renumbering were in operating condition at the time of their sale to Progress Rail.
d. Four units (UP 7876, 7877, 7905, and 7906) are SD40T-2 units; all others are standard SD40-2 units.
e. Some SD40-2 units were renumbered from UP 4000 series that were former MP units which had been in service as trailing units only, what UP calls an SD40-2B.
f. Individual unit histories:
  Road
Number
First
Number
Second
Number
Third
Number
Fourth
Number
  UP 7875 UP 3712      
  UP 7876 SP 8547      
  UP 7877 D&RGW 5356 UP 8614    
  UP 7878 MP 3309 UP 4309 UP 9945  
  UP 7879 MP 3280 UP 4280 UP 9936  
  UP 7880 UP 3779      
  UP 7881 MP 6057 UP 3957 UP 9948  
  UP 7882 UP 3649      
  UP 7883 UP 3171      
  UP 7884 MP 3145 UP 4145 UP B4145  
  UP 7885 MP 3129 UP 4129 UP 9887  
  UP 7886 UP 3414      
  UP 7887 UP 3455 UP B3455    
  UP 7888 UP 3434      
  UP 7889 MP 3313 UP 4313 UP B4313  
  UP 7890 UP 3803      
  UP 7891 UP 3622      
  UP 7892 MP 3214 UP 4214 UP 9919  
  UP 7893 UP 3392      
  UP 7894 UP 3219      
  UP 7895 UP 3277      
  UP 7896 UP 3257      
  UP 7897 MP 6060 UP 3960 WP 3960  
  UP 7898 MP 3216 UP 4216 UP B4216  
  UP 7899 UP 3417      
  UP 7900 MP 3217 UP 4217 UP B4271  
  UP 7901 UP 3648      
  UP 7902 MP 3158 UP 4158 UP 9907  
  UP 7903 MP 3217 UP 4217 UP B4217 UP 8946
  UP 7904 UP 3546      
  UP 7905 SP 8566      
  UP 7906 SP 8275      
  UP 7907 MKT 612 UP 3821    
  UP 7908 MP 3230 UP 4230 UP B4230 UP 8953
  UP 7909 MKT 621 UP 3829    
  UP 7910 UP 3280      
  UP 7911 MP 3147 UP 4147 UP 9896  
  UP 7912 UP 3748      
  UP 7913 UP 3233      
  UP 7914 UP 3283      
  UP 7915 MP 3136 UP 4136 UP B4136 UP 8938
  UP 7916 UP 3613      

Notes:

1. UP 7879 was rebuilt by UP to SD38-2, completed as UPY 868 on (pending as of 31 December 2005).
2. UP 7889 was rebuilt by UP to SD38-2, completed as UPY 867 on 2 December 2005 (date changed from 29 November 2005).
3. UP 7890 was renumbered to UP 3503 (2nd) on 20 November 2006.
4. UP 7891 was renumbered to WP 7891 on 6 March 2008; officially retired on 2 April 2008; used as the core unit for six-axle Genset RP20SD UPY 897, completed in late April 2008.
5. UP 7893 was renumbered to UP 3360 (2nd) on 6 February 2007.
6. UP 7894 was renumbered to UP 2740 on 22 April 2008.
7. UP 7896 was renumbered to UP 3283 (2nd) on 30 June 2006.
8. UP 7899 was renumbered from UP 3417 (2nd) on 14 November 2003; renumbered back to UP 3417 on 15 September 2006.
9. UP 7907 was retired on 25 May 2004; reactivated on 18 October 2004 for slug service; retired again on 14 September 2007. (part from Extra 2200 South, Issue 127, page 27)
10. UP 7909 was renumbered to UP 3613 (2nd) on 29 May 2007.
11. UP 7910 was renumbered to UP 2660 on 27 March 2008.
12. UP 7912 was renumbered to UP 3714 (2nd) on 7 December 2006.
13. UP 7914 was renumbered to UP 2693 on 9 April 2008.
14. UP 7916 was renumbered to WP 7916 on 6 March 2008; officially retired on 2 April 2008; used as the core unit for six-axle Genset RP20SD UPY 899, completed in late April 2008.
   

GE C30-7 -- 3 units
3000 horsepower; C-C trucks; 395,000 pounds operating weight

Road
Number
Previous
Number
Builder
Date
Builder
Number
Date To
7874 Series
Date
Retired
Notes
UP 7921 UP 495 Aug 1980 43067 19 Nov 2001 12 Oct 2000 1
UP 7928 UP 510 Aug 1980 43083 23 Jun 2000 18 April 2000 2
UP 7937 UP 523 Sep 1980 43096 31 May 2000 18 Apr 2000 3

General Notes:

a. Original total of 140 units; part of 7874-7941 group; total of five units renumbered prior to retirement of all C30-7s on UP.
b. Total of 86 units renumbered to UP 400-531 group; all but the above four units were retired from the 400-531 group.
c. Total of 54 units remain in UP 2400-2539 group; all but the above single unit were retired from the 2400-2539 group.
d. Total of 68 units from both 400-531 and 2400-2539 number groups assigned to UP 7874-7941 series, five units renumbered.
e. Individual unit histories:
  Road
Number
First
Number
Second
Number
Date To
400 Series
  UP 7921 UP 2500 UP 495 4 Feb 1997
  UP 7928 UP 2516 UP 510 17 Jun 1997
  UP 7937 UP 2529 UP 523 21 Aug 1997

Notes:

1. UP 495 was retired on 12 October 2000 but was still on property and was renumbered to UP 7921 on 19 November 2001 to clear the UP 495 number for use by renumbered SP GP38-2 4869.
2. UP 510 was retired as UP 510 on 18 April 2000 but was still on property and was renumbered to UP 7928 on 23 June 2000 to clear the UP 510 number for use by renumbered GP38-2 2010.
3. UP 523 was retired as UP 523 on 18 April 2000 but was still on property and was renumbered to UP 7937 on 31 May 2000 to clear the UP 523 number for use by renumbered GP38-2 2023.
   

GE C36-7 -- 19 units
3600 horsepower; C-C trucks; 391,000 pounds operating weight

A total of 19 units (UP 7947-7998) were renumbered from their previous UP 9000 Series, UP 2600 Series, and UP 600 Series numbers to this UP 7942-7999 group. (Complete roster and article on these sixty ex Missouri Pacific units)

   

Alco-GE-UP Coal Turbine -- 1 control unit, 1 turbine unit
Control unit: 2000 horsepower; C-C trucks; 363,200 pounds operating weight
Turbine unit: 7000 horsepower; 2-C+C-2 trucks; 509,100 pounds operating weight

Road
Number
First
Number
Second
Number
Rebuild
Date
Builder
Date
Builder
Number
Date
Retired

Notes
UP 8080 UP 607 UP 80 Oct 1962 Jan 1949 76311 May 1964 Traded to EMD in March 1968.
UP 8080B GN 5018 UP 80B Oct 1962 May 1947 28488 May 1964 Scrapped by UP at Omaha during 1967.

General Notes:

a. UP 8080, 8080B were built by Omaha Shops as UP 80, 80B; under construction for more than two years, between September 1959 and December 1961; entered road service in October 1962; operated in extensive tests on the Nebraska Division between Omaha and North Platte and Cheyenne, from October 1962 to May 1964, making its last trip on May 12, 1964.
b. UP 8080, 8080B were renumbered from UP 80, 80B in April 1964 to avoid number conflicts with newly ordered DD35s.
c. Total operating weight: 1,233,300 pounds, including 361,000 pound tender.
   

EMD SD40-2H -- 100 units
3000 horsepower; C-C trucks; 392,000 pounds operating weight

Road
Number
First
Number
Date To
8000-series
Builder
Date
Builder
Number

Notes
UP 8000 UP 3240 Feb 1976 Jun 1973 72684-38 Renumbered back to UP 3240 in June 1980.
UP 8001 UP 3241 Mar 1976 Jun 1973 72684-39 Renumbered back to UP 3241 in April 1981.
UP 8002 UP 3242 Apr 1976 Jun 1973 72684-40 Renumbered back to UP 3242 in May 1981.
UP 8003 UP 3243 May 1976 Jun 1974 73661-1 Renumbered back to UP 3243 in April 1981.
UP 8004 UP 3244 May 1976 Jun 1974 73661-2 Renumbered back to UP 3244 in June 1981.
UP 8005 UP 3245 June 1976 Jun 1974 73661-3 Renumbered back to UP 3245 in April 1981.
UP 8006 UP 3246 Jun 1976 Jun 1974 73661-4 Renumbered back to UP 3246 in April 1981.
UP 8007 UP 3247 Mar 1876 Jun 1974 73661-5 Renumbered back to UP 3247 in April 1981.
UP 8008 UP 3248 Jun 1976 Jun 1974 73661-6 Renumbered back to UP 3248 in April 1981.
UP 8009 UP 3249 Jun 1976 Jun 1974 73661-7 Renumbered back to UP 3249 in April 1981.
UP 8010 UP 3250 May 1976 Jun 1974 73661-8 Renumbered back to UP 3250 in April 1981.
UP 8011 UP 3251 Jun 1976 Jun 1974 73661-9 Renumbered back to UP 3251 in May 1981.
UP 8012 UP 3252 Apr 1976 Jun 1974 73661-10 Renumbered back to UP 3252 in June 1981.
UP 8013 UP 3253 Jun 1976 Jun 1974 73661-11 Renumbered back to UP 3253 in May 1981.
UP 8014 UP 3254 Jul 1976 Jun 1974 73661-12 Renumbered back to UP 3254 in May 1981.
UP 8015 UP 3255 May 1976 Jun 1974 73661-13 Renumbered back to UP 3255 in April 1981.
UP 8016 UP 3256 May 1976 Jun 1974 73661-14 Renumbered back to UP 3256 in April 1981.
UP 8017 UP 3257 Apr 1976 Jun 1974 73661-15 Renumbered back to UP 3257 in July 1980.
UP 8018 UP 3258 Apr 1976 Jun 1974 73661-16 Renumbered back to UP 3258 in April 1981.
UP 8019 UP 3259 Jun 1976 Jun 1974 73661-17 Renumbered back to UP 3259 in April 1981.
UP 8020 UP 3260 Jun 1976 Jun 1974 73661-18 Renumbered back to UP 3260 in April 1981.
UP 8021 UP 3261 Apr 1976 Jun 1974 73661-19 Renumbered back to UP 3261 in June 1980.
UP 8022 UP 3262 May 1976 Jun 1974 73661-20 Renumbered back to UP 3262 in April 1981.
UP 8023 UP 3263 Jun 1976 Jun 1974 73661-21 Renumbered back to UP 3263 in April 1981.
UP 8024 UP 3264 Apr 1976 Jun 1974 73661-22 Renumbered back to UP 3264 in April 1981.
UP 8025 UP 3265 May 1976 Jun 1974 73661-23 Renumbered back to UP 3265 in March 1982.
UP 8026 UP 3266 Apr 1976 Jun 1974 73661-24 Renumbered back to UP 3266 in March 1982.
UP 8027 UP 3267 Jun 1976 Jun 1974 73661-25 Renumbered back to UP 3267 in June 1981.
UP 8028 UP 3268 Mar 1976 Jun 1974 73661-26 Renumbered back to UP 3268 in June 1981.
UP 8029 UP 3269 May 1976 Jun 1974 73661-27 Renumbered back to UP 3269 in March 1982.
UP 8030 UP 3270 Jul 1976 Jun 1974 73661-28 Renumbered back to UP 3270 in March 1982.
UP 8031 UP 3271 Jun 1976 Jul 1974 73661-29 Renumbered back to UP 3271 in May 1981.
UP 8032 UP 3272 Jun 1976 Jul 1974 73661-30 Renumbered back to UP 3272 in March 1982.
UP 8033 UP 3273 Jun 1976 Jul 1974 73661-31 Renumbered back to UP 3273 in May 1981.
UP 8034 UP 3274 Jul 1976 Jul 1974 73661-32 Renumbered back to UP 3274 in May 1981.
UP 8035     Jul 1976 767021-1 Renumbered to UP 3305 in June 1980.
UP 8036     Jul 1976 767021-2 Renumbered to UP 3306 in June 1980.
UP 8037     Jul 1976 767021-3 Renumbered to UP 3307 in August 1981.
UP 8038     Jul 1976 767021-4 Renumbered to UP 3308 in October 1981.
UP 8039     Jul 1976 767021-5 Renumbered to UP 3309 in October 1981.
UP 8040     Jul 1976 767021-6 Renumbered to UP 3310 in September 1981.
UP 8041     Jul 1976 767021-7 Renumbered to UP 3311 in July 1980.
UP 8042     Jul 1976 767021-8 Renumbered to UP 3312 in June 1980.
UP 8043     Jul 1976 767021-9 Renumbered to UP 3313 in September 1981.
UP 8044     Jul 1976 767021-10 Renumbered to UP 3314 in April 1981.
UP 8045     Jul 1976 767021-11 Renumbered to UP 3315 in September 1981.
UP 8046     Jul 1976 767021-12 Renumbered to UP 3316 in August 1980.
UP 8047     Jul 1976 767021-13 Renumbered to UP 3317 in August 1981.
UP 8048     Jul 1976 767021-14 Renumbered to UP 3318 in July 1980.
UP 8049     Jul 1976 767021-15 Renumbered to UP 3319 in October 1981.
UP 8050     Jul 1976 767021-16 Renumbered to UP 3320 in March 1982.
UP 8051     Jul 1976 767021-17 Renumbered to UP 3321 in September 1981.
UP 8052     Jul 1976 767021-18 Renumbered to UP 3322 in March 1982.
UP 8053     Jul 1976 767021-19 Renumbered to UP 3323 in October 1981.
UP 8054     Jul 1976 767021-20 Renumbered to UP 3324 in March 1982.
UP 8055     Jul 1976 767021-21 Renumbered to UP 3325 in October 1981.
UP 8056     Jul 1976 767021-22 Renumbered to UP 3326 in October 1981.
UP 8057     Jul 1976 767021-23 Renumbered to UP 3327 in September 1981.
UP 8058     Jul 1976 767021-24 Renumbered to UP 3328 in July 1980.
UP 8059     Jul 1976 767021-25 Renumbered to UP 3329 in June 1980.
UP 8060     Jul 1976 767021-26 Renumbered to UP 3330 in August 1981.
UP 8061     Jul 1976 767021-27 Renumbered to UP 3331 in March 1982.
UP 8062     Jul 1976 767021-28 Renumbered to UP 3332 in October 1981.
UP 8063     Jul 1976 767021-29 Renumbered to UP 3333 in October 1981.
UP 8064     Jul 1976 767021-30 Renumbered to UP 3334 in October 1981.
UP 8065     May 1977 776013-1 Renumbered to UP 3400 in October 1981.
UP 8066     May 1977 776013-2 Renumbered to UP 3401 in September 1981.
UP 8067     May 1977 776013-3 Renumbered to UP 3402 in March 1982.
UP 8068     May 1977 776013-4 Renumbered to UP 3403 in March 1982.
UP 8069     May 1977 776013-5 Renumbered to UP 3404 in October 1981.
UP 8070     May 1977 776013-6 Renumbered to UP 3405 in March 1982.
UP 8071     May 1977 776013-7 Renumbered to UP 3406 in October 1981.
UP 8072     May 1977 776013-8 Renumbered to UP 3407 in November 1981.
UP 8073     May 1977 776013-9 Renumbered to UP 3408 in March 1982.
UP 8074     May 1977 776013-10 Renumbered to UP 3409 in March 1982.
UP 8075     Jul 1979 786218-11 Renumbered to UP 3584 in October 1981.
UP 8076     Jul 1979 786218-12 Renumbered to UP 3585 in October 1981.
UP 8077     Jul 1979 786218-13 Renumbered to UP 3586 in October 1981.
UP 8078     Jul 1979 786218-14 Renumbered to UP 3587 in October 1981.
UP 8079     Jul 1979 786218-15 Renumbered to UP 3588 in November 1981.
UP 8080     Aug 1979 786218-16 Renumbered to UP 3589 in September 1981.
UP 8081     Aug 1979 786218-17 Renumbered to UP 3590 in August 1981.
UP 8082     Aug 1979 786218-18 Renumbered to UP 3591 in August 1981.
UP 8083     Aug 1979 786218-19 Renumbered to UP 3592 in November 1981.
UP 8084     Aug 1979 786218-20 Renumbered to UP 3593 in March 1982.
UP 8085     Aug 1979 786218-21 Renumbered to UP 3594 in August 1981.
UP 8086     Aug 1979 786218-22 Renumbered to UP 3595 in September 1981.
UP 8087     Aug 1979 786218-23 Renumbered to UP 3596 in November 1981.
UP 8088     Aug 1979 786218-24 Renumbered to UP 3597 in October 1981.
UP 8089     Aug 1979 786218-25 Renumbered to UP 3598 in March 1982.
UP 8090     Aug 1979 786218-26 Renumbered to UP 3599 in August 1981.
UP 8091     Aug 1979 786218-27 Renumbered to UP 3600 in November 1981.
UP 8092     Aug 1979 786218-28 Renumbered to UP 3601 in August 1981.
UP 8093     Aug 1979 786218-29 Renumbered to UP 3602 in August 1981.
UP 8094     Aug 1979 786218-30 Renumbered to UP 3603 in November 1981.
UP 8095     Aug 1979 786218-31 Renumbered to UP 3604 in March 1982.
UP 8096     Aug 1979 786218-32 Renumbered to UP 3605 in October 1981.
UP 8097     Aug 1979 786218-33 Renumbered to UP 3606 in August 1981.
UP 8098     Aug 1979 786218-34 Renumbered to UP 3607 in September 1981.
UP 8099     Aug 1979 786218-35 Renumbered to UP 3608 in October 1981.

General Notes:

a. UP 8000-8002 were built as UP 3240-3242; converted to high speed 8000 class units in 1976; converted back to normal SD40-2s between June 1980 and May 1981.
b. UP 8003-8034 were built new as UP 3243-3274; converted to high speed 8000 class units in 1976; converted back to normal SD40-2s between June 1980 and March 1982.
c. The original order for UP 8003-8034 (EMD 73661, UP 3243-3287) included UP 3284, 3285 which were renumbered to UP 8044, 8045 in May and April 1976; both units were renumbered back to their original numbers in August 1976 after UP decided to accept the new deliveries of SD40-2s in the new 8000 class rather than to continue to renumber SD40-2s already in service.
d. UP 8035-8064 were renumbered to UP 3305-3334 between June 1980 and March 1982.
e. UP 8065-8074 were renumbered to UP 3400-3409 between June 1980 and March 1982; originally to be delivered as UP 3400-3409, but in late April 1977, UP asked EMD to deliver the units with 8000-series numbers.
f. UP 8075-8099 were renumbered to UP 3584-3608 between June 1980 and March 1982.
g. Equipped with high speed 59:18 gear ratio.

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