Swapping a diesel into a vehicle means it can be used for anything. Towing, daily driving, drag racing, sled pulling, off-roading, the versatility that comes with converting to diesel power is endless. Of course, all diesel conversions garner attention—and we’ve got two builds, from two completely different YouTube personalities to show you. One has been made as lightweight as possible with 5-second eighth-miles in mind and the other weighs 8,000 pounds and packs a yellow surprise under the hood. The former is a ’70 K15 sporting an LB7 Duramax with a giant turbo and plenty of nitrous. The other consists of an old body style Ford F-350 with a Caterpillar 3126 shoehorned between the frame rails.

It’s all-out horsepower vs. medium-duty work ethic in this Unique Swaps installment. Which head-turner would you choose?

Wyatt Stengel’s K15

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

As part of the supporting cast for the BoostedBoiz—a YouTube channel with 1.16 million subscribers—Wyatt Stengel brings something other than turbo’d import material to the brand. In this case it’s a ’70 GMC K1500 with a nitrous-huffing Duramax in the engine bay. Bought brand-new by Wyatt’s great-uncle back in 1970, it’s been in his family for more than 50 years. But after an unfortunate accident roughly seven years ago, Wyatt decided to use what was left of the totaled GMC and build a race truck. The body sits on an ’03 GMC Sierra 2500 HD frame that’s been back-halved and the truck meets the 25.6 SFI chassis spec that’s required for fast, heavy trucks. It’s four-wheel drive and usually rolls on Nitto drag radials.

Owner-Built LB7

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

Wyatt built the engine himself. It’s a factory crankcase LB7 Duramax that’s been graced with a Callie’s crankshaft, Carrillo rods and Mahle forged-aluminum pistons. The valvetrain consists of an alternate firing order camshaft, upgraded pushrods and dual valve springs in factory (yet ported) heads. The heads are anchored to the block by way of ARP Custom Age 625+ head studs. Here you can spot the ’03 IFS, the Wagler street manifold up top and the piping that feeds to, from and around the remote-mounted turbocharger.

1,000 HP On Fuel, 1,500 HP On The Squeeze

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

Rather than try to finagle the giant T6 turbo into the lifter valley, Wyatt remote-mounted it near the passenger side wheel, and its 85mm compressor wheel pulls air in through the inner headlight in the grille. Boosted air is routed to an air-to-water intercooler in the cab before feeding back through the firewall and into the heads. Three kits of nitrous and dual 10-pound bottles of capacity came courtesy of Nitrous Express, with Exergy Performance providing the fuel and Bosch Motorsport engine control unit. A single 14mm stroker CP3 feeds a set of 250-percent over injectors and Exergy fine-tunes the MS 25 Sport stand-alone ECU. A 220-gph 5G AirDog low-pressure fuel supply system is along for the ride as well.

All-Business Interior

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

The clean, well-executed craftsmanship of the build continues into the cab. Beneath the fabricated transmission tunnel sits a 4L80E that was assembled by Wyatt’s friend, Joel Knauber and that sports a D3 transbrake from Jake’s Performance. Other names that lent a helping hand in the build were Dirty Hooker Diesel, Ticon Industries, Vibrant Performance and HTP Welders. Thanks to their help, Wyatt plans to run the 5.90 Index class on the Outlaw Diesel Super Series circuit when possible—and then turn things up while playing on his home turf in Bradenton, Florida.

Deboss Garage’s “F-Tree Kitty”

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

Rich Bosch is the face of Deboss Garage, a YouTube channel that’s grown to more than 641,000 subscribers thanks to his wild projects, mad mechanical skills and tremendous on-camera relatability. In 2019 he set out to build what many consider a dream truck: an old-body style F-350 with a Caterpillar engine (#FTreeKitty). And the icing on the cake (for many viewers, at least) ended up being his decision to run an Allison transmission behind the yellow inline-six. Now, three years later, that truck is driving. And hundreds of thousands of people are watching.

Bye Bye Big-Block

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

To squeeze the 3126 (7.2L) Cat between the frame rails and firewall, have it clear the front axle, not sag the front suspension and function you’ll need to watch the YouTube series. However, for a quick recap you should know this: the truck came from California (rust-free and 460-powered), the 3126 has been rebuilt, the 2000 series Allison was built by Xcalliber and a Firestone air suspension system helped solve a few suspension issues and worries. The amount of measuring, mock-ups and problem-solving that went into this project is mind-numbing, but the end result is one of the cleanest, rarest and coolest diesel swaps in the world.

King Ranch Interior

Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

Injecting some Super Duty into the OBS Ford cab, a full-on King Ranch interior (complete with the center console) was installed. Also notice the ’08-’10 Super Duty dash, which features a custom, 12-inch gauge cluster from Holley. Prior to all of this work, Bosch fully insulated the cab, because with a modern day plush interior you might want to have modern day sound deadening, too. The extend of the work performed in the interior proves that the truck was intended to be driven and not just a conversation piece. Not everyone has the time or the skill to pull off a swap like this, which is why the Deboss Garage channel is so entertaining. Check it out if you haven’t ventured over there yet!

Keyword: Unique Diesel Swaps: A ’70 K15 Duramax and a CAT-Powered ’93 F-350

CAR'S NEWS RELATED

2023 BMW iX M60 Review: Ramping up the Power

•    Auto123 reviews the 2023 BMW iX M60. BMW takes straight aim at Tesla and its top-selling Model X with the iX all-electric SUV’s new M60 edition. This is the third variant of the model BMW has put out, after the xDrive40 and iX xDrive50 that debuted with the 2022 ...

View more: 2023 BMW iX M60 Review: Ramping up the Power

Valencia MotoGP: Pramac Ducati on top in FP1 but it's Johann Zarco who leads the way

Johann Zarco helped secure a Ducati top four lockout in FP1 at Valencia, after beating Fabio Di Giannantonio to first place on his final flying lap. Title contender Jorge Martin made the perfect start to FP1 as he led the way early on from Marco Bezzecchi. The same couldn’t ...

View more: Valencia MotoGP: Pramac Ducati on top in FP1 but it's Johann Zarco who leads the way

Lewis Hamilton’s father named as “representative” at centre of Red Bull drama

Lewis Hamilton’s father has been named as the “representative” who was in contact with Red Bull. Anthony Hamilton made contact with Christian Horner, a Red Bull spokesperson told the BBC. But Anthony Hamilton is not officially involved in his son’s management anymore, which may explain the differing versions of ...

View more: Lewis Hamilton’s father named as “representative” at centre of Red Bull drama

MotorWeek Thanksgiving Retro Review Marathon Is The Perfect Way To Drowning Out Family Drama

Screenshot: YouTube/ MotorWeek Well hello and welcome again to another YouTube livestream of MotorWeek’s Retro Reviews, we’re glad to have you with us. The heroes at MotorWeek are already underway in their noble pursuit to save the Thanksgiving holiday with five straight days of free classic car reviews, starting ...

View more: MotorWeek Thanksgiving Retro Review Marathon Is The Perfect Way To Drowning Out Family Drama

2025 Subaru Forester, RUF-Restored Ford GT40, And An Exploded Engine: Rambling About Cars 151

We'll also have a cheap car challenge to find a road-trip vehicle for Thanksgiving.

View more: 2025 Subaru Forester, RUF-Restored Ford GT40, And An Exploded Engine: Rambling About Cars 151

Rivian Leasing Program Launching Next Week But Only For The R1T

This will mark the first time Rivian vehicles are available through a leasing scheme, but details are scarce for now.

View more: Rivian Leasing Program Launching Next Week But Only For The R1T

Hot Wheel’s Latest Exclusive Is A Dodge Power Wagon With A Swivel Frame

This Red Line Club car costs $30 for members.

View more: Hot Wheel’s Latest Exclusive Is A Dodge Power Wagon With A Swivel Frame

Finally! Rivian confirms R1T leasing program is coming very soon

Less than a week after pulling its first demand lever to get new customers behind the wheel of its existing R1T pickup inventory, Rivian is further incentivizing would be drivers by introducing a lease program for the first time. Rivian’s held a mainstay on Electrek‘s homepage the last month, ...

View more: Finally! Rivian confirms R1T leasing program is coming very soon

Ford caves on EV dealer program and will cut charger requirements

Ford caves on EV dealer program following IL loss and will cut charger requirements

Illinois High School's Racing Program Can't Race After Losing Insurance Policy

Fresh status of discussions revealed in VR46 vs Pramac tug-of-war for Moto2 star Fermin Aldeguer

Lewis and McLoughlin lead midway through dramatic Canberra

Esteban Ocon sorry for ‘not acceptable’ F1 fan treatment and reflects on lucky escape from drain drama

F1 confirm plan to resume FP2 at Las Vegas Grand Prix after manhole drama

Vegas FP1 drama sparks Vasseur/Wolff fury - for different reasons

In full: Toto Wolff’s “completely ridiculous” rant in defence of the Las Vegas GP after drain cover drama

Angry Ferrari boss Frederic Vasseur labels Las Vegas GP drain cover drama “unacceptable for F1”

GM's Cruise cancels its employee equity program in fourth quarter

Tesla Supercharging Station is now in Sunway Pyramid

OTHER CAR NEWS

; Top List in the World https://www.pinterest.com/newstopcar/pins/
Top Best Sushi Restaurants in SeoulTop Best Caribbean HoneymoonsTop Most Beautiful Islands in PeruTop Best Outdoor Grill BrandsTop Best Global Seafood RestaurantsTop Foods to Boost Your Immune SystemTop Best Foods to Fight HemorrhoidsTop Foods That Pack More Potassium Than a BananaTop Best Healthy Foods to Gain Weight FastTop Best Cosmetic Brands in the U.STop Best Destinations for Food Lovers in EuropeTop Best Foods High in Vitamin ATop Best Foods to Lower Your Blood SugarTop Best Things to Do in LouisianaTop Best Cities to Visit in New YorkTop Best Makeup Addresses In PennsylvaniaTop Reasons to Visit NorwayTop Most Beautiful Islands In The WorldTop Best Law Universities in the WorldTop Richest Sportsmen In The WorldTop Biggest Aquariums In The WorldTop Best Peruvian Restaurants In MiamiTop Best Road Trips From MiamiTop Best Places to Visit in MarylandTop Best Places to Visit in North CarolinaTop Best Electric Cars For KidsTop Best Swedish Brands in The USTop Best Skincare Brands in AmericaTop Best American Lipstick BrandsTop Michelin-starred Restaurants in MiamiTop Best Secluded Getaways From MiamiTop Best Things To Do On A Rainy Day In MiamiTop Most Instagrammable Places In MiamiTop Interesting Facts about FlorenceTop Facts About The First Roman Emperor - AugustusTop Best Japanese FoodsTop Most Beautiful Historical Sites in IsraelTop Best Places To Visit In Holy SeeTop Best Hawaiian IslandsTop Reasons to Visit PortugalTop Best Hotels In L.A. With Free Wi-FiTop Best Scenic Drives in MiamiTop Best Vegan Restaurants in BerlinTop Most Interesting Attractions In WalesTop Health Benefits of a Vegan DietTop Best Thai Restaurant in Las VegasTop Most Beautiful Forests in SwitzerlandTop Best Global Universities in GermanyTop Most Beautiful Lakes in GuyanaTop Best Things To Do in IdahoTop Things to Know Before Traveling to North MacedoniaTop Best German Sunglasses BrandsTop Highest Mountains In FranceTop Biggest Hydroelectric Plants in AmericaTop Best Spa Hotels in NYCTop The World's Scariest BridgeTop Largest Hotels In AmericaTop Most Famous Festivals in JordanTop Best European Restaurants in MunichTop Best Japanese Hiking Boot BrandsTop Best Universities in PolandTop Best Tips for Surfing the Web Safely and AnonymouslyTop Most Valuable Football Clubs in EuropeTop Highest Mountains In ColombiaTop Real-Life Characters of Texas RisingTop Best Beaches in GuatelamaTop Things About DR Congo You Should KnowTop Best Korean Reality & Variety ShowsTop Best RockstarsTop Most Beautiful Waterfalls in GermanyTop Best Fountain Pen Ink BrandsTop Best European Restaurants in ChicagoTop Best Fighter Jets in the WorldTop Best Three-Wheel MotorcyclesTop Most Beautiful Lakes in ManitobaTop Best Dive Sites in VenezuelaTop Best Websites For Art StudentsTop Best Japanese Instant Noodle BrandsTop Best Comedy Manhwa (Webtoons)Top Best Japanese Sunglasses BrandsTop Most Expensive Air Jordan SneakersTop Health Benefits of CucumberTop Famous Universities in SwedenTop Most Popular Films Starring Jo Jung-sukTop Interesting Facts about CougarsTop Best Hospitals for Hip Replacement in the USATop Most Expensive DefendersTop Health Benefits of GooseberriesTop Health Benefits of ParsnipsTop Best Foods and Drinks in LondonTop Health Benefits of Rosehip TeaTop Best Air Fryers for Low-fat CookingTop Most Asked Teacher Interview Questions with AnswersTop Best Shopping Malls in ZurichTop The Most Beautiful Botanical Gardens In L.A.Top Best Mexican Restaurants in Miami for Carb-loading rightTop Best Energy Companies in GermanyTop Best Garage HeatersTop Largest Banks in IrelandTop Leading Provider - Audit and Assurance In The USTop Best Jewelry Brands in IndiaTop Prettiest Streets in the UKTop Best Lakes to Visit in TunisiaTop Highest Mountains in Israel