ChevymackIn 1933, Kenworth built its first truck with a diesel engine as original equipment. Kenworth engineer Murray Aitken drew up plans to install the 100-hp Cummins HA-4 diesel engine as original equipment. And chief engineer John Holmstrom added his idea – vertical exhaust pipes behind the truck’s cab.
Kenworth’s first diesel-powered production model was built for California-based Valley Motor Express, which requested the truck be shipped down the West Coast from Seattle most of the way by water so ... moreIn 1933, Kenworth built its first truck with a diesel engine as original equipment. Kenworth engineer Murray Aitken drew up plans to install the 100-hp Cummins HA-4 diesel engine as original equipment. And chief engineer John Holmstrom added his idea – vertical exhaust pipes behind the truck’s cab.
Kenworth’s first diesel-powered production model was built for California-based Valley Motor Express, which requested the truck be shipped down the West Coast from Seattle most of the way by water so it would arrive truly new.
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