“Big Boy Up The Wasatch Grade”

Big Boys were primarily used in Union Pacific’s Wyoming division, and could be seen running between Utah and Wyoming!

While no one knows for certain, it is said that an ALCO employee had chalked the name onto the first 4000 class engine constructed. 

Of the 25 Big Boys that were built, all but 8 were scrapped, unfortunately.

Some Quick Facts about UP #844

• Rail Line: Union Pacific
• Power type: 4-8-4 Steam Locomotive FEF-3 class Northern
• Builder: American Locomotive Company
• Locomotive and tender weight: 907,890 lbs
• Driver diameters – 80 inches!
• Tractive effort: 63,750 lbf
• MAX SPEED – 120 MPH !

Quick Facts about UP Big Boy 4014

• Rail Line: Union Pacific
• Driver diameters:-68 inches
• Power type: 4-8-8-4 Steam Locomotive Class 4000
• Builder: American Locomotive Company 1941
• Coal Consumption: 22,000 lbs per hour (converted to oil)
• Locomotive and tender weight: 1,250,000 lbs
• Max Speed: 80 MPH !

Let us know if you have seen these two locomotives in person. We would love to hear about your experience!

If you would like to participate in funding the T1 trust to help build a new 4-4-4-4T1 steam locomotive from scratch, you can reach the team at “steam locomotive trust organization” at https://prrt1steamlocomotivetrust.org/