99% of People Who've Seen Big Boy Have No Idea What Happens Inside the Cab

Union Pacific Big Boy No. 4014 is the world's largest operating steam locomotive. It weighs 1,208,750 pounds, stretches 132 feet, and produces 7,000 horsepower. Millions of people have watched it pass from trackside. Almost none of them know what happens inside the cab while they stand there watching. This video takes you inside the cab of Big Boy 4014 during its 2026 coast-to-coast America 250 tour. Lead engineer Ed Dickens and fireman Austin Barker operate a machine that runs on 1940s technology, burns atomized fuel oil in a 150-square-foot firebox, and demands skills that no school, simulator, or manual can teach. The cab temperature reaches 150 degrees Fahrenheit in summer. The boiler holds 10,500 gallons of water under 300 PSI of pressure. Every control except the PTC monitor and radio is original 1941 equipment. The video covers the 2016-2019 restoration led by Dickens, including the coal-to-oil conversion that succeeded where Union Pacific's 1946 attempt on Big Boy 4005 had failed. It also covers the 2024 installation of Positive Train Control directly into the tender, making 4014 the first steam locomotive to operate on the mainline without a diesel helper. The Hidden Economic Genius of Big Boy 4014 is that a third steam-powered dynamo generates the electricity to run a 21st-century GPS safety system from 19th-century thermodynamics. Chapters: 00:00 150 Degrees Inside the Cab 01:30 The Backhead: 1940s Command Center 04:00 Ed Dickens and the Impossible Restoration 06:30 The Oil Conversion That Took 70 Years 09:00 Austin Barker: The Invisible Fireman 11:00 What the Crew Sees That You Never Will 13:30 The PTC Paradox: 1941 Meets 2024 15:30 The Skills That Die With Them References: Union Pacific 4014. Wikipedia. Union Pacific Big Boy. Wikipedia. Five mind-blowing Big Boy facts. Trains Magazine. March 2024. Inside the star of the show: How a Big Boy cab ride is not what you'd expect. Trains Magazine. June 2026. Operating Big Boy: Inside the cab of America's most powerful steam engine. KTIV. June 1, 2026. Inside Big Boy: WJAC exclusive ride through Central Pa. WJAC. July 9, 2026. Putting the Big Boy Back Together. Union Pacific. March 22, 2018. How PTC came to Union Pacific's Big Boy. Trains Magazine. December 2025. Big Boy Upgraded With Self-Contained PTC. Railway Age. June 14, 2024. How Union Pacific Restored the Big Boy. autoevolution. May 17, 2022. What It Takes to Put Big Boy 4014 on Modern Rails. Trains.com Store. April 29, 2026. Big Boy 4014 Leads the First-Ever Coast-to-Coast Steam Tour. Trains.com Store. January 27, 2026. Inside the Cab of Big Boy 4014. Sheldrake Press. Memorable train rides: Aboard Union Pacific No 4014 Big Boy. Trains Magazine. July 2025. The Big Boy steam locomotive celebrates America 250 with a cross-country tour. NPR. July 11, 2026. RailGiants Train Museum: Union Pacific Big Boy 4014 Back Head. RailGiants. Historic Steam Locomotive Outfitted with Cutting-Edge Technology. Union Pacific. June 2024.