“Thank you to all who made the historic 50-bottom plow possible this past summer! And to those who are new to steam, thanks for visiting the 150HP Case homepage. LET’S KEEP HISTORY ALIVE.” -Kory Anderson, 150HP Case Engineer


THE 150 HP CASE IS THE LARGEST STEAM TRACTION ENGINE EVER PRODUCED. Built originally in 1905, zero of them ever lived on – until recreated from scratch in 2018 by Kory Anderson.

The journey of the multi-year build was followed by more than 10,000 followers on Facebook and eventually led to more than 20+ MILLION views on YouTube with his legendary “engine pull” in September 2019 at the Western Minnesota Steam Threshers Reunion (WMSTR) in Rollag, Minnesota, followed by the 2022 historic 50-bottom pull in Andover, SD. This site is a place for steam engineers and hobbyists to learn more about bringing the 150 Case to life.

engine specifications:

35 tons weight loaded || 180 PSI boiler pressure || 200 RPM engine operating speed

Engine Bore14 inEngine Stroke14 in
Flywheel50 inPower SteeringYes
Length25 ftWidth14 ft
Height14 ftWeight Loaded75,000 lbs
Speed Low2.64 mphSpeed High5.69 mph
Coal Tender6,000 lbsWater Tender650 gallons
Firebox Length58.25 inFirebox Width39.25 in
Firebox Height45.5 inBoiler Barrel42 in diameter
Flue Diameter2 inFlue Length108.5 in
Flue Number93Boiler Pressure180 psi

Check out these awesome 150HP Case videos:

Check out the event teaser video for the 2022 50-Bottom Plow in Andover, SD!
Watch Kory Anderson and his team fire up the 150HP Case in Andover, South Dakota (2020).

Watch the 150HP Case pull 4 steam engines up a 13% grade hill in Rollag, MN (2019).

Watch the 150HP Case pull 36 bottom John Deere plow in Andover, SD (2020).

Coming soon: Kory will be launching “The 150 Difference”, a daily guide book inspired by the build of the 150 Case. It incorporates important habits recommend for people to unlock their true potential. 150 Days. 150 Degree Difference in your life. Do you have what it takes?

Want to see the 150HP Case in person?

Come say hi to Kory & the team! Visit us every year at the James Valley Threshing Show in Andover, SD (weekend after Labor Day).