BLI 7237 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific ( Promontory Excursion) UP 4014 Paragon4 Truck and painted body

and painted body

Nickel silver rail and connectors

Shaft 4WD drivetrain

2 ounces per tire (without foam)

BLI 7237 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific ( Promontory Excursion) UP 4014 Paragon4 Truck and painted bodyBLI 7237 N Scale Big Boy 4 8 8 4 Steam Loco Union Pacific ( Promontory Excursion) UP 4014 Paragon4 Often called the largest steam loco ever made, and certainly a contender for the Worlds Most Famous Locomotive, the Big Boy was forged under some of the most strenuous demands ever placed on a locomotive. The UP Railroad needed a locomotive that could be used to pull a 3,600 ton train over Sherman Hill and the 1. 14% grade from Ogden to Wasatch, Utah