Union Pacific's GP9 Turbocharging Program
This page was last updated on March 5, 2013.
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More Information
- Turbocharged GP9s -- An article about UP's GP9 turbocharging program
- UP 300 Series Roster Information -- A roster list of all 50 GP9 cab units and all 50 GP9 booster units
UP 100- and 200- Series Units
| Road Number |
Turbocharger Type |
Date Installed |
Notes |
| UP 185B | AiResearch | Apr 1956 | Removed in 1962 |
| UP 261 | AiResearch | May 1956 | Removed in 1962 |
| UP 281 | AiResearch | Dec 1955 | Removed in 1962 |
| UP 283 | (none) | Extra openings in hood as test |
UP 300 Series Units
Summary of 300-series turbocharged GP9s
| Turbocharger Type |
Quantity Cab Units |
Quantity Booster Units |
Notes | |
| Elliott | 6 | 4 | 2 cab units and 3 booster units rebuilt to EMD | |
| AiResearch | 3 | 6 | 3 booster units rebuilt to EMD | |
| EMD | 27 | 27 | ||
| (none) | 14 | 13 |
EMD GP9 -- 50 units
| Road Number |
Turbocharger Type |
Date Installed |
Notes |
| UP 300 | EMD | May 1959 | Applied at EMD; sent to EMD in March 1959 |
| UP 301 | EMD | Mar 1959 | Pre-production GP20 completed at EMD; received at UP Omaha on 8 May 1959 |
| UP 302 | AiResearch | Jun 1959 | |
| UP 303 | (none) | ||
| UP 304 | EMD | Jun 1964 | |
| UP 305 | EMD | Apr 1959 | Pre-production GP20 completed at EMD |
| UP 306 | Elliott/EMD | Oct 1959 | |
| UP 307 | EMD | Feb 1964 | |
| UP 308 | EMD | Feb 1965 | |
| UP 309 | (none) | ||
| UP 310 | Elliott/EMD | Oct 1959 | |
| UP 311 | EMD | May 1959 | Turbocharger applied at EMD. |
| UP 312 | (none) | ||
| UP 313 | EMD | Jun 1959 | Turbocharger applied at EMD. |
| UP 314 | Elliott | Jul 1959 | Elliott turbochargers removed September 1963 |
| UP 315 | Elliott | Jul 1959 | |
| UP 316 | EMD | Sep 1965 | |
| UP 317 | EMD | May 1965 | |
| UP 318 | AiResearch | Apr 1959 | |
| UP 319 | (none) | ||
| UP 320 | EMD | May 1959 | Turbocharger applied at EMD. |
| UP 321 | (none) | ||
| UP 322 | EMD | Mar 1963 | |
| UP 323 | (none) | ||
| UP 324 | Elliott | Jun 1959 | Elliott turbochargers removed August 1964 |
| UP 325 | EMD | Feb 1966 | |
| UP 326 | EMD | July 1962 | Entered shop on 3 July 1962; released on 30 July 1962 |
| UP 327 | (none) | ||
| UP 328 | EMD | Sep 1964 | |
| UP 329 | EMD | Jun 1965 | |
| UP 330 | EMD | Aug 1963 | |
| UP 331 | AiResearch | Mar 1959 | |
| UP 332 | EMD | Aug 1963 | |
| UP 333 | (none) | ||
| UP 334 | EMD | Aug 1964 | |
| UP 335 | EMD | Oct 1965 | |
| UP 336 | Elliott | Mar 1959 | Elliott turbochargers removed October 1963 |
| UP 337 | (none) | ||
| UP 338 | (none) | ||
| UP 339 | EMD | Jan 1963 | |
| UP 340 | EMD | Jun 1964 | |
| UP 341 | (none) | ||
| UP 342 | EMD | Mar 1963 | |
| UP 343 | EMD | Nov 1965 | |
| UP 344 | EMD | Jul 1964 | |
| UP 345 | (none) | ||
| UP 346 | (none) | ||
| UP 347 | EMD | Mar 1965 | |
| UP 348 | EMD | Jul 1963 | |
| UP 349 | (none) |
EMD GP9B -- 50 units
| Road Number |
Turbocharger Type |
Date Installed |
Notes |
| UP 300B | EMD | Jun 1959 | Turbocharger applied at EMD. |
| UP 301B | EMD | Jun 1959 | Turbocharger applied at EMD. |
| UP 302B | EMD | Jul 1962 | Work began on 22 June 1962; completed on 24 July 1962 |
| UP 303B | AiResearch/EMD | Sep 1959 | |
| UP 304B | (none) | ||
| UP 305B | (none) | ||
| UP 306B | AiResearch | Mar 1959 | AiResearch turbochargers removed in July 1962; entered shop on 11 July 1962; released on 27 July 1962 |
| UP 307B | Elliott/EMD | Aug 1959 | |
| UP 308B | EMD | May 1959 | Pre-production GP20 completed at EMD; received at UP Omaha on 7 May 1959 |
| UP 309B | EMD | Aug 1962 | Entered shop on 16 July 1962; released on 10 August 1962 |
| UP 310B | (none) | ||
| UP 311B | AiResearch/EMD | May 1959 | |
| UP 312B | AiResearch | Nov 1959 | AiResearch turbochargers removed in September 1962. |
| UP 313B | (none) | (may have been equipped with AiResearch) | |
| UP 314B | EMD | Jul 1963 | |
| UP 315B | EMD | Jul 1963 | |
| UP 316B | EMD | Oct 1962 | |
| UP 317B | AiResearch | Sep 1959 | |
| UP 318B | EMD | May 1963 | |
| UP 319B | EMD | Jun 1964 | |
| UP 320B | (none) | ||
| UP 321B | EMD | Feb 1965 | |
| UP 322B | EMD | Sep 1962 | |
| UP 323B | Elliott | Jul 1959 | Elliott turbochargers removed in 1963. |
| UP 324B | Elliott/EMD | Jun 1959 | |
| UP 325B | EMD | Oct 1965 | |
| UP 326B | EMD | Oct 1963 | |
| UP 327B | EMD | Apr 1964 | |
| UP 328B | EMD | Aug 1965 | |
| UP 329B | (none) | ||
| UP 330B | (none) | ||
| UP 331B | (none) | ||
| UP 332B | EMD | Oct 1962 | |
| UP 333B | EMD | May 1963 | Entered shop for conversion on 31 August 1962 |
| UP 334B | EMD | Dec 1964 | |
| UP 335B | EMD | Nov 1965 | |
| UP 336B | EMD | Aug 1963 | |
| UP 337B | EMD | Dec 1963 | |
| UP 338B | (none) | ||
| UP 339B | EMD | Feb 1965 | |
| UP 340B | EMD | Oct 1964 | |
| UP 341B | (none) | ||
| UP 342B | EMD | Jul 1964 | |
| UP 343B | EMD | Sep 1963 | |
| UP 344B | EMD | Nov 1962 | |
| UP 345B | Elliott/EMD | Jul 1959 | |
| UP 346B | (none) | ||
| UP 347B | (none) | ||
| UP 348B | AiResearch/EMD | Jul 1959 | |
| UP 349B | (none) |
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