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Union Pacific's GP9 Turbocharging Program

This page was last updated on March 5, 2013.

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More Information

UP 100- and 200- Series Units

Road
Number
Turbocharger
Type
Date
Installed
Notes
UP 185B AiResearch Apr 1956 Removed in 1962 or 1963
UP 261 AiResearch May 1956 Removed in 1962 or 1963
UP 281 AiResearch Dec 1955 Removed in 1962 or 1963
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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