ATSF GE U23B 6300 class: master power roster with specifications and references : roster: 6300 class: road number(s) model: builder info: history: disposition: 6300 6300 : U23B: builder: GE 11 date: Jun70 serial no.: 37491 requisition no.: 391-53146 11 …

Unit # Notes Model Serial # Pictures : ATSF 6300 : U23B 37491: 2: 139138: ATSF 6301 : U23B 37492: 3: 82462: ATSF 6304 : U23B 37495: 1: 50560

2004年11月28日 · GE U23B - 3 of 49 units; Road Numbers Builder Date Date Date Notes ATSF # BNSF # Number Built Rebuilt Retired: 6300 - 37491 Jun 70 Aug 88 6301 - 37492 Jul 70 Jun 83 6302 - 37493 Jul 70 Jun 83 6303 - 37494 Jul 70 ...

U23B Phases. GE used a common body for the various U-boats, so this list is based on phases of the U30B.

Powered by a V12 FDL prime mover, the 2250 h.p. U23B was GE’s intermediate-sized four-axle road-switcher of the late 1960s through the mid 1970s. The U23B’s direct competitor during this period was the very successful EMD GP38.

The ATSF #6332 was professionally transformed into a new class, the SF30B [Santa Fe (SF), 3000 HP (30), B-B trucks (B)], and renumbered #7200. The new SF30B prototype had numerous physical, cosmetic, and internal changes from its humble beginnings as a U23B unit.

ATSF GE U23B 6303 built July 1970, retired June 1983 to GE for C30-7 series, and seen in Chicago, IL July 21, 1970. Unknown photographer, Iowa Chapter NRHS collection 2.

GE SF30B - 1 of 1 units (ATSF U23B Rebuild) Road Numbers Builder Date Date Date Notes ATSF # 1st # 2nd # BNSF # Number Built Rebuilt Retired: 6419 ATSF 6332 ATSF 7200:2 4276 37523 Dec 70 Jul 87 Sources of Information:

PURCELL OK July 1977 -- Santa Fe U23B 6314 leads two C&NW lease units as their mixed freight departs southbound. GE built the 6314 (s/n 37505) in August 1970 and delivered it in blue with yellow trim. After June 1972 it wore yellow warbonnet. It was sold to GE in Sept 1988 for use in the Super 7 program.

Trailing unit of 2 2300HP units of westbound Santa Fe TOFC through Santa Fe Jct., K.C., Mo.