HomeAutoHunterAutoHunter Spotlight: Duramax-powered 1955 GMC Flatbed

AutoHunter Spotlight: Duramax-powered 1955 GMC Flatbed

Five windows and infinite smiles


Featured on AutoHunter, the online auction platform driven by ClassicCars.com, is this five-window Duramax-powered 1955 GMC flatbed truck. It is based on a later-model GMC Topkick chassis and drivetrain, the latter being a 6.6-liter Duramax turbodiesel V8 backed by an Allison five-speed automatic transmission. Features include power steering and brakes, aftermarket climate control system, power four-wheel disc brakes,electric brake controller and 22-inch aluminum wheels. Finished with a brown patina over a brown interior with cowhide-style accents, this custom GMC truck comes with a clear title.

The exterior’s rusty patina finish is complemented by a white grille, front bumper and headlights. Additional items include polished aluminum windshield visor, folding mirrors, flatbed with side rails, B&W gooseneck turn-over hitch, dual fuel tanks and smokestack-style exhaust pipes, among others.

A set of polished aluminum 22-inch wheels is wrapped in radial tires.

The captain’s chairs are upholstered in brown fabric with cinnamon and white cowhide-style accents. Features include center console with storage compartment and cup holders, floor-mounted automatic shifter and cowhide-style seat, door panel, under-dash and headliner trim.

A more modern GMC TopKick has donated its gauges, which include a 85-mph speedometer, 5,000-rpm tachometer and gauges for the fuel level, oil pressure, voltage and coolant temperature. The digital odometer reads 192,000 miles, which the selling dealer reports to be the true mileage on the chassis and drivetrain.

Power is provided by a 6.6-liter Duramax turbodiesel V8 and backed by an Allison five-speed automatic transmission.

The 1955 GMC cab has been fitted on what the selling dealer believes to be a 2005 GMC TopKick chassis. The suspension consists of a leaf spring-mounted solid front and rear axles. An onboard air system with electric pump and storage tank has been fitted to the chassis.

The auction for this five-window Duramax-powered 1955 GMC flatbed truck ends on Thursday, April 6, 2023, at 4:20 p.m. (PDT)

Visit the AutoHunter listing for more information and photo gallery

Diego Rosenberg
Diego Rosenberg
Lead Writer Diego Rosenberg is a native of Wilmington, Delaware and Princeton, New Jersey, giving him plenty of exposure to the charms of Carlisle and Englishtown. Though his first love is Citroen, he fell for muscle cars after being seduced by 1950s finned flyers—in fact, he’s written two books on American muscle. But please don’t think there is a strong American bias because foreign weirdness is never far from his heart. With a penchant for underground music from the 1960-70s, Diego and his family reside in the Southwest.



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