Cummins-Powered Chevy K50: The Ultimate Rig?

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Chevy K50

Incredible attention to detail and just the right mix of old and new make ‘The Duke’ the coolest truck we’ve seen in a long time.

It isn’t often that you come across a truck that leaves you stunned, speechless, and slack-jawed. But Randall Robertson‘s amazing Chevy K50, otherwise known as “The Duke,” is such a ride. And as you might imagine by looking at this incredible rig, Robertson isn’t exactly some truck-building amateur. In fact, he owns RTech Fabrications, a custom truck shop in Idaho that routinely churns out jaw-dropping builds.

RTech’s specialty, however, is 1962-1972 Chevy trucks. And judging by his builds, Robertson prefers those of the more heavy-duty variety. Still, each and every one of his creations is entirely different and wholly unique. And that can certainly be said of this amazing Chevy K50, which looks like nothing else we’ve ever seen before.

Chevy K50

The Duke is a culmination of everything Robertson has learned over his many years of building trucks. Technically, it sits on a medium-duty C50 chassis. But Robertson stretched that base to accommodate four doors and an 8-foot tilt bed. Hence, it’s now technically a Chevy K50 – a 50-series, four-wheel drive truck.

As amazing as The Duke looks, what lies underneath makes it even more special. Robertson wanted reliable diesel power, so he went with one of the most legendary oil burners of all time – the 5.9L Cummins 12-valve. Instead of going crazy with power adders, this one’s tuned to a modest 450 hp.

Chevy K50

Shifts are handled by an NV4500 five-speed manual, which sends power to an NP205 transfer case. Axles consist of a Dana 60 up front and 14-bolt out back. The suspension is likewise simply but effective. Both front and rear are lifted on leaf springs, with Bilstein shocks at all four corners. Load leveling airbags do help make towing a little bit easier.

The craftsmanship on the outside is, quite simply, amazing. This Chevy K50 looks like a factory-built truck, yet things like the bumpers and running boards are 100% custom made. The tilt bed is a nice touch that adds both style and utility. Inside, you’ll find a custom dash that looks OEM, and a set of 2010 GMC Sierra seats. And yet, they’re fittingly stitched in an original pattern.

Chevy K50

Rolling on a set of KMC XD829 Hoss 2 wheels and 40×15.50R20 Nitto Trail Grapplers, The Duke might just be the coolest truck we’ve seen in ages. It’s a testament to the amazing things RTech is doing these days. Not to mention a fitting showcase for their genius mastermind.

Brett Foote is a longtime contributor to Internet Brands’ Auto sites, including Chevrolet Forum, Rennlist, and Ford Truck Enthusiasts.

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