Video Inside the Cummins Heavy-Duty Engine Plant Take a look inside the Cummins Heavy Duty Engine Plant in Jamestown, NY. See the production process and machining of Cummins heavy duty diesel engines. Advertisement ByEngine Builder on May 22, 2015 AdvertisementClick Here to Read MoreAdvertisement Advertisement In this article:Cummins, diesel, Engine Plant, Heavy-Duty Video: 1929 Duesenberg Straight 8 Engine Video: Talking Shop with Pat Musi Video: The ARMEX Difference Video: Oil Viscosities Explained Advertisement VIDEOS Watch Engine Builder's latest discussions and explanations. SHOP Shop the latest Engine Builder merchandise. SUBSCRIBE Stay up to date by signing up for the Engine Builder newsletter.