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Locomotive Phases and Rosters - EMD/IC GP10

The GP10 is an Illinois Central rebuild of older GP-series locomotives, including the GP7, GP9, GP9B and GP18. The phases below are for the GP10 rebuilds themselves and do not reflect the phases of the original locomotives prior to rebuilding. These phases do not include GP10's rebuilt for other railroads, except for CR 7560-7575 and ADN 1810-1811. IC GP8 rebuilds followed similar phases, except with an additional division of Phase 4; see GP8 Phases.

These phases are of my own making.

Phases

Phase 1a: 1967-1968

The first few units rebuilt in 1967-1968 had inconsistent spotting features. All either had a high short hood or lacked the central air intake of later units (or both).

Phase 1b: 1969-1970

These units were very similar to Phase 2 units, except they either had a wider air filter housing, a cab-mounted headlight, or both.

Phase 2: 1969-1971

Phase 3a: 1971-1977

Phase 3b: 1974-1977

CR 7560-7575 were similar, except with cab-mounted headlight.

Phase 3c: 1977

Phase 4: 1977-1978

ADN 1810-1811 were similar, except with cab-mounted headlight.

Other details

IC GP10's were not rebuilt in order based on their roadnumber, although most units (especially prior to about IC 8260) were rebuilt from corresponding 9000-series units (ie. 9004 became 8004 and so on). As details such as louvers, lights and grabirons varied between units, the drawings I've made of the series represent "stand-ins" for the most common variations.

Lights and air filters

Misc. details

Roster

The following illustrates the phases of GP10 production for units with IC numbers. Fan and fuel filler variations were the result of variations in the original GP unit phases:

Rebuild dates are courtesy of the roster at illnois-central.net. A few units showed phase details inconsistent with the apparent rebuild date, in which case I have noted the date with a question mark.

Sort by: Number - Phase

IC NumberRebuiltPhaseFans, fuel
filler
Notes
800019753b--
800119692--
800219723a--
800319702--
800419681a48" R
800519723a--
800619773a--
800719723a--
800819743b--
800919681a--
801019743a--
801119733a--
801219702--
801319733a--
801419692--
801519773a--
801619773b36" FGP18 rebuild
801719733a--GP7 rebuild
801819723a--
801919712--
802019733a--
802119743a--
80221969236" FModified fuel filler
802319712--
802419753b--GP7 rebuild
802519681a48" R
802619723a--
802719743a--
802819753b36" F
802919733a48" F
803019691b--
803119691b--
803219712--
803319712--
803419712--
803519713a--
803619691b--
803719743b--GP7 rebuild
803819671a--
803919692--
804019702--
804119712--
804219743a--
804319773b--GP7 rebuild
804419712--
804519703a--
804619753b--GP7 rebuild
804719702--
804819743a36" F
804919733a--GP7 rebuild
805019773c48" F
805119713a--
805219671a--
805319723a--
805419774--
805519713a--Phase 3c headlight
805619702--
805719773c--
805819701b--
805919702--
806019691b--
806119753a--
806219723a--
806319703a--
806419692--
806519702--
806619692--
806719733a--
806819702--
806919691b--
807019692--
807119712--
80721968248" R
807319691b--
807419733a--
807519702--
807619723a--
807719712--
807819712--
807919702--
80801977448" F
808119712--
808219671a48" R
808319691b--
808419691b--
808519733a--
808619774--
808719702--
808819743a--
808919773c--
809019753a--
809119753a--
809219753a--GP7 rebuild
809319702--
809419723a--
809519753b--GP7 rebuild
809619691b--
809719773b48" R
809819773b--
809919743a36" F
810019713a--
810119702--
810219702--
81031970?3b--
810419753b--
810519733a--
810619712--
810719692--
810819723a--
81091978448" F
811019743a--
811119712--
811219712--
811319691b--
811419712--
811519712--
811619753b--GP7 rebuild
811719753b--
811819733a--
811919753a--
812019733a--
812119702--
812219743a--
812319753b--
812419743a--
812519733a--GP7 rebuild
812619773b48" RRebuilt from GP10 8158
812719723a--
812819723a--
812919743a--GP7 rebuild
813019773b48" F
813119753a--
813219753a36" F
813319712--
813419692--
813519743a36" F
813619773b48" F
813719743a36" F
813819753b36" F
813919712--
814019702?
814119733a--
814219691b--
814319712--
814419733a--
814619723a--
814719773b--
814819712--
814919733a36" F
815019702--
815119723a--
815219723a--
815319773b48" F
815419743a--GP7 rebuild
815519723a--
815619773b--
815719743a--
815819681aRebuilt to 8126
815919691b--
816019723a--
816119713a--
816219723a--
816319712--
81641964 (74?)3a--
816519702--
816619702--GP7 rebuild
816719712--
816819743a--
816919712--
817019712--
817119712--
817319723a--
817419773c--
817519702--
817619733a--
817719702--
817819773b--
817919712--
818019713a--
818119713a--
818319723a--
818419712--
818619743a36" F
818719712--
818819702--
818919723a--
819019702--
819119692--
819219702--GP7 rebuild
819319702--
819419702--
819519701b--
819619692--
819719702--
819919702--
820219753b--
820319774--GP7 rebuild
820419733a--
820519733a--
820719733a--
820919733a--GP7 rebuild
821019702--
821119712--
821219712--
821319733a36" F
821419773c--
821519712--
821619743a36" F
821719763a--
821919743a--
822019733a--
822119743a--
822219702--
822319712--
822419702--
822519702--
822619702--
822719702--
822819702--
822919723a--
823019712--
823319681a48" R
823419712--
823519702--
823619712--
823719743a--GP7 rebuild
824019773c--
824119743a--
824319723a--
824519733a--
824719702--
824819712--
824919753a--GP7 rebuild
825019702--
825119733a36" F
825419712--
825619702--
825719723a--
825819702--GP7 rebuild
825919702--GP7 rebuild
826019712--GP7 rebuild
826519733a--
826619712--GP7 rebuild
826719712--
826819712--
826919712--GP7 rebuild
827019712--
827119723a36" F
827219723a36" F
827319723a--
827419723a--
827519723a--GP7 rebuild
827619723a--GP7 rebuild
827719723a--GP7 rebuild
827819723a--GP7 rebuild
827919723a--GP7 rebuild
828019733a--
828119723a--GP7 rebuild
828219723a--GP7 rebuild
828319743b--
828519733a--
828619733a--
828719733a--
828819733a36" F
828919733a--
829019733a--
829119733a--GP7 rebuild
829219733a--GP7 rebuild
829319733a--
829419733a--GP7 rebuild
829519743a--
829619743a--
830019733a48" F
83011978noneGP11 prototype
830219773b--
830319733a48" F
830419773b?--
830519773c--
83061971248" F
830719743a48" F
830819773b--
830919774--
831019774--
831119774--
831219773c--
831319743a48" F
831419774--
83151977448" F
831619733a--GP7 rebuild
831719753a48" RGP7 rebuild
83181971248" F
83191977448" F
832019773c48" F
832119733a48" F
83221971248" F
832319774--
832419774--Rebuilt from GP10 8443
832519773c--
832619723a48" F
832719723a48" F
83281971248" F
832919733a--
833019774--
83311977448" F
833219733a48" F
833519743a48" RGP7 rebuild
833719743a48" F
833919743a48" F
834319743a48" R
834619743a48" R
834719733a36" F
83481971248" F
835119723a?
835419753a48" F
835719723a48" F
835819774--
835919753b48" R
836119753b48" RGP7 rebuild
836219723a48" F
836519743a--
837019743a48" R
837119743a48" F
837519743a48" F
837719753a48" F
837919743a48" F
838319743a48" RGP7 rebuild
838719743a48" F
839019723a--
839119733a48" RGP7 rebuild
839219733a48" RGP7 rebuild
839319763a--
839419763a--
839519763a--
839619763a36" F
839719763a--
841819743a48" FGP18 rebuild
844219743a--
844319743a?Rebuilt to 8324
844419743a--
844519743a--
844619743b--
844719743a--
846019773a48" F
846119773a36" F
846219774--
846319763a36" FGP7 rebuild
846419773a48" F
846519763a36" FGP7 rebuild
846619763a--
 Copyright © Michael Eby - Page code last updated 2016-02-15