The Malaise Era of 1975 to 1985 was a dark time for automotive enthusiasts. With new emissions and safety regulations from the Federal government, cars quickly got slower, heavier, and uglier.
The 1972 Corvette was rated at a dismal 200 horsepower, while the full-size 1977 Monte Carlo was available with a 140 horsepower 305 V8 or a 170 horsepower 350 V8. The era of the muscle car had come to an end, and a new era had begun that was focused on efficiency, not performance.
In an effort to increase the average fuel economy of its fleet, General Motors experimented with smaller engines, turbochargers, and other tricks and technologies to get more MPGs.
With so much attention on smog pumps and secondary air injectors, there was one thing General Motors never built: a diesel-engine Corvette. To do so would be unthinkable; it would be a sacrilege of the highest degree. While there were many prototype and experimental vehicles throughout Corvette’s history, no customer cars ever left the production line with a diesel engine from the factory.
However, Tennessee-based Kustom by Keck has transformed his 1993 Chevrolet Corvette C4 Greenwood Edition into a diesel-powered sports car. I saw his custom Corvette at the 2024 SEMA Show, at the Air Lift Performance booth in the Central Hall.
The Corvette’s original powerplant has been swapped with a 1999 Mercedes-Benz 3.0L OM606 turbo diesel engine. It is paired to a 700R4 transmission from Transmission Mafia in Gainesville, Georgia.
This is the kind of weird engine swap I would have loved reading about in Grassroots Motorsports or Car Craft magazine back in the day (after reading about V8 S10 swaps, of course).
The Corvette rides on Air Lift Performance suspension, allowing for adjustable ride height at the touch of a button to achieve the perfect stance.
The exterior of the car is a visual blast from the late ’80s and early ’90s, and it’s over the top in the best way possible. The car gives serious Miami Vice vibes with its white wheels and teal and purple custom pinstripe graphics.
Kustom by Keck didn’t stop with the visuals, either. This car is filled with unique custom touches, including a standout set of custom infinity mirror taillights from RetroVette, which provide a high-tech, futuristic flair to set it apart from every other Corvette. Every corner of this C4 has been considered, detailed, and reimagined.
In a world full of LS swaps and carbon-fiber everything, this diesel-powered, 90’s throwback C4 show car breaks the mold and refuses to fit in. It’s more Radwood than SEMA, and I enjoy highlighting custom car builders that do their own thing.
This one-of-a-kind car was recently advertised for sale on social media in June 2025, with an asking price of $15,000.
For more, follow @kustom_by_keck on Instagram.
