BLI 10603 HO Scale Big Boy 4-8-8-4 UP 4014 250th East Coast Tour 2026 Stealth DC Era_1930-1940s + Total Impulse: 39

Total Impulse: 39

and throttle precision

Flying palette of surfaces

BEC Peak Current: 20A

5mm needle and nozzle

BLI 10603 HO Scale Big Boy 4-8-8-4 UP 4014 250th East Coast Tour 2026 Stealth DC Era_1930-1940s + Total Impulse: 39BLI 10603 HO Scale Big Boy 4 8 8 4 UP 4014 250th East Coast Tour 2026 Stealth DC When railfans think of big steam, one locomotive almost always comes to mind: the Big Boy. Often regarded as the largest steam locomotive ever builtand certainly a contender for the world's most famous locomotivethe Big Boy was created to meet some of the most demanding operating requirements ever placed on a steam engine. The Union Pacific Railroad needed a locomotive