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Image: Ford Motor Company
Ever since GM introduced its 300hp Duramax diesel in 2001, the horsepower races have been up and running. It wasn't long before Ford took the lead, and to this day Ford offers the most powerful diesel you can buy in a pickup truck, at 500 horsepower. That's more than GM and Ram, and even more than Ford's own flagship Ponycar, the Mustang. While the 6.7L Power Stroke was introduced in 2011, Ford hadn't yet hit its stride, and it's weird 3-wheel turbocharger created drive pressure issues, and if tuned, was severely limited in boost and power. Ford however, had a solution.
That solution came in 2020 when Ford upped the horsepower to 500hp, and added a more conventional Garrett turbo that would supply all the airflow the engine would need. Not only was Ford now ahead in the horsepower wars, the truck was actually underrated, as 470 to 480hp to the rear tires was a number often seen on the dyno. So, you're looking for a hot rod 6.7? Try to find a 2020 and newer, as they're already extremely powerful from the factory. If you have an earlier version not to worry, there are plenty of aftermarket turbo options, from drop-in replacements, all the way to compound-turbo setups, like this one: SPE Compounds
Perhaps one of the coolest names in the industry, the Mustang Dark Horse was introduced in 2024, as a more track-optioned package, as compared to a normal GT. It's also the most powerful naturally aspirated Mustang in the current stable, and at 500hp, it's 20hp more than the "normal" 5.0. The real difference though is in the rest of the car, as exterior upgrades, a complete handling package, 19-inch wheels with Brembo brakes, and even optional Recaro seats. So for 2025? The Dark Horse is back, but with much of the same setup. The price is a bit hard to swallow $68,275 as of publishing, but we can almost guarantee you'll be the only one in your neighborhood who has one. If you need more oomph, all the rest of the 5.0L Upgrades (like supercharging) should work just fine on the Dark Horse.
SOURCE: https://www.ford.com/cars/mustang/models/dark-horse-premium/
Posted on their Facebook page over the weekend, the Jumping Jack Flash Pro Stock Pulling Team has put together a wild one here. Check out their P-Pump'd 6.7L Powerstroke! Looking closely at the image we can see: an oil sump system; a custom dual water pump setup; a heavily modified front cover; p-pump and it's gear box; custom valve covers (necessary for the new mechanical injectors); custom headers and what looks like a mechanical fuel supply pump. There's going to be a lot of learning to be had before this all new design becomes consistent. As far as we know no one has ever done this with a 6.7 Powerstroke, or with any hot V engine. Either way these guys are no strangers to pushing the envelope with the 6.7L and we are very excited to watch the progress.
If you've heard horror stories about what happens if you put diesel exhaust fluid (DEF for short) into the fuel tank of your diesel, we'll cut to the chase right now. They're all true. As soon as the DEF is added and mixed in with the diesel it will crystallize, and send what amounts to little spiky monsters that will eat through your entire fuel system. Unfortunately this starts as soon as the engine is started, so if you catch yourself in the act, do NOT start the engine, and immediately get the vehicle towed to a repair shop. If it's too late and you've already driven the vehicle unfortunately you are looking at what usually amounts to thousands of dollars in damages, in fact Ford has a "disaster repair kit," that basically replaces all the fuel system components (including injectors) just for this purpose. So no lapses in concentration here, make sure the DEF goes in the DEF tank, otherwise you could be looking at big trouble.
As more and more Mustangs (and F-150s) get wrecked and sent to the scrapper, more and more Coyote engines become available. With the amount of aftermarket support for these engines, not to mention they're pretty stout in stock form, Coyote swaps are becoming more and more popular. Depending on the Generation and completeness of the engine you can pick up a used 5.0 Coyote for anywhere between $3,000 (basic engine, no electronics) and $10,000 (newer engine, electronics, transmission.) For many enthusiasts, the choice is clear. We talked to Nate Wilson of Wilsonz Customz in Grass Valley, CA who recently stabbed a 820-hp Coyote and manual trans into a vintage fastback Mustang. "It's by far one of the nastiest engines we've ever swapped into something," Nate relates. "Plus is starts up every time, run smooth, and is still a Ford-powered Ford." We'd call that success!
If you're the type of person who likes to tow fast, up hills, guess what, a compound turbo system just might be what you're looking for! With a big turbo blowing into a smaller one, the workload of the turbos is essentially halved, making for lower intake air temperatures, and a lot cooler EGT. Essentially you get the spooling characteristics of the small turbo, combined with the airflow capability of the large turbo. It also makes it possible to make 600 to 700 horsepower without ever worrying about exhaust gas temperatures, thanks to a hefty amount of boost, and keeping the engine on the lean side. Fortunately there's plenty of support for 6.7L Power Strokes in this category, so you can easily find a setup that's right for you. Check out our options here: SPE 6.7L Powerstroke Turbos
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