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4-8-8-4 Class 4000 'Big Boy' UP

4-8-8-4 Class 4000 'Big Boy' UP Profile and Models

4-8-8-4 Class 4000 'Big Boy' UP

4014 near Chapin, Iowa in July 2019. ©Tyler Silvest

The Union Pacific "Big Boy" is a class of articulated 4-8-84 steam locomotive, produced in the early 1940s. 25 of these huge locomotives were built to haul long freight services over the Wasatch Mountains between Utah and Wyoming and were later seen on workings over Sherman Hill. They were the only locomotives to use the unusual 4-8-8-4 wheel arrangement and features a huge 150 sq ft firebox. No. 4014 was reacquired by the Union Pacific in 2013 and has been completely restored to operational condition, which included converting it to run on oil. The locomotive has been seen touring the Mid-West throughout Mid-2019 as it regained its title as the largest, heaviest and most powerful operating steam locomotive in the world.

(Information provided by Wikipedia)

Type of Locomotive

 Steam

Builder

 American Locomotive Company

Build Date

 1941 - 1944

Total Built

 25

Tractive Effort

 135,375 lbf

Top Speed

 80 mph

Wheel Configuration

 4-8-8-4

Operated By

 Union Pacific Railroad

Main Duties

 Heavy Freight

In Service Until

 1959

Surviving Examples

 8

 

N Gauge
trainModels Produced
Athearn N Gauge 4-8-8-4 Class 4000 'Big Boy' UP

DCC fitted, with sound
Broadway Limited Imports N Gauge 4-8-8-4 Class 4000 'Big Boy' UP

DCC fitted, with sound
Kato N Gauge 4-8-8-4 Class 4000 'Big Boy' UP

DCC compatible. PCB swap required
compare_arrowsCompare these models
format_paintLiveries Produced
Union Pacific livery sample Union Pacific
(1862 - present)
View All Products Produced
HO Gauge (1:87 Scale)
trainModels Produced
Rivarossi HO Gauge (1:87 Scale) 4-8-8-4 Class 4000 'Big Boy' UP

DCC Ready. 21-pin socket
Broadway Limited Imports HO Gauge (1:87 Scale) 4-8-8-4 Class 4000 'Big Boy' UP

DCC decoder fitted. Analogue compatible
compare_arrowsCompare these models
format_paintLiveries Produced
Union Pacific livery sample Union Pacific
(1862 - present)
Unpainted livery sample Unpainted
View All Products Produced

Products awaiting categorisation

Scale Brand Image Construction Type DCC Capability Product Code Product Title Livery
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 11820
View 		Big Boy 4-8-8-4 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 11821
View 		Big Boy 4-8-8-4 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 11824
View 		Big Boy 4-8-8-4 4019 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 11825
View 		Big Boy 4-8-8-4 4024 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 11826
View 		Big Boy 4-8-8-4 4009 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 11828 Big Boy 4-8-8-4 4001 of the Union Pacific - digital sound fitted Not set DCC fitted, with sound 11828
View 		Big Boy 4-8-8-4 4001 of the Union Pacific - digital sound fitted
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22901
View 		Big Boy 4-8-8-4 4012 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22903
View 		Big Boy 4-8-8-4 4019 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22904
View 		Big Boy 4-8-8-4 4023 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22906
View 		Big Boy 4-8-8-4 4007 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22907
View 		Big Boy 4-8-8-4 4013 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22908
View 		Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22909
View 		Big Boy 4-8-8-4 4022 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22992
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 22998
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30100 Big Boy 4-8-8-4 4004 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30100
View 		Big Boy 4-8-8-4 4004 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30101 Big Boy 4-8-8-4 4005 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30101
View 		Big Boy 4-8-8-4 4005 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30102 Big Boy 4-8-8-4 4006 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30102
View 		Big Boy 4-8-8-4 4006 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30103 Big Boy 4-8-8-4 4012 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30103
View 		Big Boy 4-8-8-4 4012 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30104 Big Boy 4-8-8-4 4017 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30104
View 		Big Boy 4-8-8-4 4017 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30105 Big Boy 4-8-8-4 4018 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30105
View 		Big Boy 4-8-8-4 4018 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30106 Big Boy 4-8-8-4 4014 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30106
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30107 Big Boy 4-8-8-4 4023 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30107
View 		Big Boy 4-8-8-4 4023 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30108 Big Boy 4-8-8-4 4002 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30108
View 		Big Boy 4-8-8-4 4002 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30109 Big Boy 4-8-8-4 4011 of the Union Pacific RTR/RTUse/Pre-assembled Not set 30109
View 		Big Boy 4-8-8-4 4011 of the Union Pacific Awaiting Categorisation
N Gauge Athearn 30200 Big Boy 4-8-8-4 4004 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30200
View 		Big Boy 4-8-8-4 4004 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30201 Big Boy 4-8-8-4 4005 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30201
View 		Big Boy 4-8-8-4 4005 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30202 Big Boy 4-8-8-4 4006 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30202
View 		Big Boy 4-8-8-4 4006 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30203 Big Boy 4-8-8-4 4012 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30203
View 		Big Boy 4-8-8-4 4012 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30204 Big Boy 4-8-8-4 4017 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30204
View 		Big Boy 4-8-8-4 4017 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30205 Big Boy 4-8-8-4 4018 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30205
View 		Big Boy 4-8-8-4 4018 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30206 Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30206
View 		Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30207 Big Boy 4-8-8-4 4023 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30207
View 		Big Boy 4-8-8-4 4023 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30208 Big Boy 4-8-8-4 4002 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30208
View 		Big Boy 4-8-8-4 4002 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 30209 Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 30209
View 		Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn No image available RTR/RTUse/Pre-assembled Not set 4014
View 		Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Athearn 40140 Big Boy 4-8-8-4 4014 of the Union Pacific RTR/RTUse/Pre-assembled Not set 40140
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Broadway Limited Imports 7240 Class 4000 4-8-8-4 'Big Boy' 4014 in Union Pacific black "Kenefick Park" Version 1944 with Wilson Aftercooler, 25-C-400 Coal Tender- Digital sound fitted RTR/RTUse/Pre-assembled DCC fitted, with sound 7240
View 		Class 4000 4-8-8-4 'Big Boy' 4014 in Union Pacific black "Kenefick Park" Version 1944 with Wilson Aftercooler, 25-C-400 Coal Tender- Digital sound fitted Awaiting Categorisation
N Gauge Con-Cor No image available RTR/RTUse/Pre-assembled Not set 0001-003605
View 		Big Boy 4-8-8-4 4013 of the Union Pacific Awaiting Categorisation
N Gauge Con-Cor No image available RTR/RTUse/Pre-assembled Not set 0001-003606
View 		Big Boy 4-8-8-4 4006 of the Union Pacific Awaiting Categorisation
N Gauge Con-Cor No image available RTR/RTUse/Pre-assembled Not set 0001-003611
View 		Big Boy 4-8-8-4 4010 of the Union Pacific Awaiting Categorisation
N Gauge Kato 126-4014 Big Boy 4-8-8-4 4014 of the Union Pacific RTR/RTUse/Pre-assembled Not set 126-4014
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Kato 126-4014-DCC Big Boy 4-8-8-4 4014 of the Union Pacific - digital fitted RTR/RTUse/Pre-assembled Not set 126-4014-DCC
View 		Big Boy 4-8-8-4 4014 of the Union Pacific - digital fitted Awaiting Categorisation
N Gauge Kato 126-4014-S Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted RTR/RTUse/Pre-assembled Not set 126-4014-S
View 		Big Boy 4-8-8-4 4014 of the Union Pacific - digital sound fitted Awaiting Categorisation
N Gauge Key Imports No image available RTR/RTUse/Pre-assembled Not set UP-4000
View 		Big Boy 4-8-8-4 4000 of the Union Pacific Awaiting Categorisation
N Gauge Key Imports No image available RTR/RTUse/Pre-assembled Not set UP-4020
View 		Big Boy 4-8-8-4 4020 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi 9157 Big Boy 4-8-8-4 4005 of the Union Pacific RTR/RTUse/Pre-assembled Not set 9157
View 		Big Boy 4-8-8-4 4005 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi 9208 Big Boy 4-8-8-4 4013 of the Union Pacific Not set Not set 9208
View 		Big Boy 4-8-8-4 4013 of the Union Pacific
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9218
View 		Big Boy 4-8-8-4 4010 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9219
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9220
View 		Big Boy 4-8-8-4 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9221
View 		Big Boy 4-8-8-4 4005 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9222
View 		Big Boy 4-8-8-4 4013 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9226
View 		Big Boy 4-8-8-4 4010 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9227
View 		Big Boy 4-8-8-4 4014 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9244
View 		Big Boy 4-8-8-4 4003 of the Union Pacific Awaiting Categorisation
N Gauge Rivarossi No image available RTR/RTUse/Pre-assembled Not set 9284
View 		Big Boy 4-8-8-4 of the Union Pacific Awaiting Categorisation

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