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Trucks on Display


Below is a sampling of the many trucks on display in our Trucking Hall of Fame® Exhibit Hall. Check out our app for more information, photos, and an audio recording for each truck.  Click here to download.

1938 Kenworth Conventional Model

Engine Type:
Cummins HBIS-600

Transmission Type:
4-Speed Brown-Lipe

Truck Information:
CAT Scale’s 1938 Kenworth is known by drivers all across the country, but very few may know that it started out as a firetruck that served the city of Spokane, Washington until 1970. That year, the truck's original Hall Scott Model 177 gasoline engine was switched out for a 1941 Cummins HBIS-600 diesel engine with 175 HP and a belt drive supercharger. The supercharger, which was made by Schwitzer for Cummins, gives the truck its distinct exhaust sound and was the forerunner of turbocharging that is used today. CAT Scale Company purchased the truck in 1989 and painted it in CAT Scale signature black and gold. When founder Bill Moon first heard about the Great Race – a cross-country road rally for vintage vehicles – he decided he was going to enter. Bill asked his mechanic, Bud Dawson, which truck would be best, and Bud recommended this 1938 Kenworth. Bud worked on it and got it ready for the 1990 Great Race, which went from White Plains, New York, to Disneyland in California – 4,095 miles. Though called a race, it’s actually a rally; the focus is on precision driving rather than speed. This truck participated in the Great Race every year from 1990 to 2001 so it’s got a lot of race miles on it. It placed as high as 3rd in the Sportsman Division and won several Truckin’ Awards over the years. Many people would have their vehicles shipped to the start of the race, but we always drove ours to the start and drove it home from the finish. In two weeks of driving, we covered seven to nine thousand miles. With no power steering and no air conditioning, that is a hard drive. Top Speed: 70 MPH *For more information on this truck's racing stats and specs, visit

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