This Old Truck: 1951 Series 921 Diamond T

In a new YouTube series titled “This Old Truck,” Legacy Classic Trucks founder Winslow Bent explores vintage trucks, and in its newest episode, gets behind the wheel of a 1951 Series 921 Diamond T.

Dubbed the “Cadillac of Trucks”, the Diamond T company was founded in 1905 by C.A. Tilt in Chicago. In 1940, Diamond introduced a series of six-cylinder gas and diesel engines, good for up to 118 horsepower, alongside a 200-horsepower Cummins.

Originally, these 921 series were equipped with four- or six-cylinder engines, but this fully restored rig currently features a bus motor with an 8.3-liter Cummins C Series diesel engine paired with a 4-speed automatic and a 3-speed browning auxiliary transmission good for 250 horsepower. Outfitted with a front and rear air suspension, the Diamond T can haul light to heavy loads all in a super comfortable cruiser of a truck that can hit 70 mph. The 1951 921 Series Diamond T features a two-tone paint scheme exterior with a firetruck red shade at the bottom half of the truck as a bright white wraps the extended cab.

See the full build in the video above.

By A.J. Hecht

A.J. Hecht is the managing editor of THE SHOP and host of the In Gear with THE SHOP podcast. Have an idea, a tip, or a question you’d like to see answered? Contact A.J. at ahecht@cahabamedia.com.