BLI 10601 HO Scale Big Boy 4-8-8-4 UP 4014 250th West Coast Tour 2026 Stealth DC Kaiju EXT Fly indoors in gymnasiums and

Fly indoors in gymnasiums and other suitable spaces

the latter’s design won the heated competition in December 1957

Driveline: Fully Ball-raced

Once-piece steel axles

workers could easily inspect and service locos under cover

BLI 10601 HO Scale Big Boy 4-8-8-4 UP 4014 250th West Coast Tour 2026 Stealth DC Kaiju EXT Fly indoors in gymnasiums andBLI 10601 HO Scale Big Boy 4 8 8 4 UP 4014 250th West 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