Although Ford has been manufacturing three-quarter ton and heavier-duty pickups since the late 1940s, the introduction of the Super Duty line in 1999 marked an important milestone for F-Series trucks. Instead of retrofitting the existing F-150 platform for the tougher jobs that heavy-duty pickups are often tasked with, Ford took a clean-sheet approach and developed a vehicle architecture that was unique to Super Duty line in order to avoid limiting the trucks’ capability.

For those seeking serious hauling power and steadfast durability in their first-generation Super Duty truck, Ford offered the 7.3-liter Power Stroke diesel V8 engine, which the automaker had been producing in partnership with International Truck and Engine Corporation (later known as Navistar) since 1994 (pictured). In the years since, Ford’s Super Duty trucks have matured not only terms of capability, but versatility and civility as well, and advancements in Power Stroke diesel engine designs have played a crucial role in this evolution. And as Jacob White of Edge Products notes, these efforts have earned Ford a legion of diehard fans among the heavy-duty set.

“I’m a Ford truck guy – I’ve owned quite a few of them over the past 20 years. In my opinion, the Super Duty’s reputation for capability and reliability are well-earned. These trucks started off as kind of ‘no frills’ hardcore work trucks that could handle just about anything you could throw at them. The chassis is really robust, and while the suspension designs weren’t the most sophisticated when the Super Duty line debuted, it just worked. You didn’t have to worry about parts failing or things wearing out prematurely. This was a truck that was designed from the ground up to take the abuse.”

Over the years, the design of the Power Stroke diesel V8s that Ford offers has progressed alongside the Super Duty line itself. White cites the 6.7-liter Power Stroke V8 as a fan favorite, an engine architecture that was originally introduced in 2011 and continues to serve as the basis for Power Stroke diesel engine design to this day, while the 6.0-liter Power Stroke V8, produced from 2003.5 to 2007, is often considered less desirable due to teething issues early in its production. It was known for head gasket failures, often occurring under normal load at relatively low mileage. A common fix, known as “bulletproofing,” involved replacing the factory head bolts with stronger, longer studs. Other issues included clogged oil coolers, which caused oil pressure and blow-by problems, and EGR valve failures that increased crankcase pressure. The engine remained in production for just three and a half years before being replaced by the 6.4-liter Power Stroke.

White is quick to point out that choosing a favorite is largely a subjective matter. “It really depends on what your particular definition of ‘best’ is. I’m a 7.3-liter guy. It doesn’t make huge power numbers, but they’re easy to work on and they get the job done. And I think that for a lot of folks who are using heavy-duty trucks for tough jobs, those are the highest priorities. But with the right aftermarket support, all of the Power Stroke engines can enjoy that kind of durability, and all of them have strong followings.”

Here we’ll take a closer look at how the Power Stroke diesel V8 has evolved since the Super Duty’s introduction. Along the way we’ll get some insight from White about those changes and what they mean for Power Stroke owners in the long term.

7.3-liter Power Stroke Diesel V8 (1999 – 2003)

Ford actually introduced the 7.3-liter diesel back in 1994 in the F-250 and F-350 trucks. This powerplant also came along for the ride when the Super Duty line was introduced in 1999, but it wasn’t a simple carry-over affair from those outgoing models.

“Ford applied a number of upgrades to the 7.3 when it debuted with the Super Duty trucks,” White says. “They added an intercooler system so it could produce more usable power while keeping charge air temperatures in check, they moved to a wastegated turbocharger for better spool-up response, and they switched to a large injector. Beyond that, the Super Duty itself was a huge change from the outgoing heavy-duty trucks. They were quieter, much more civil, and delivered improved ride quality and interior enhancements that upped the comfort factor.”

White notes that while intake and exhaust upgrades are common bolt-ons for first-generation Super Duty diesels, the modification journey with any Super Duty truck usually starts at the software level. For first-generation Super Duty Power Stroke engines, he points to the Edge EVOHT2 as a solid, budget-friendly flash tuning solution. But for those who really want to dial these trucks in, he recommends stepping up to the Edge Evolution CTS3.

“The CTS3 comes pre-loaded with three unique calibrations that really add some versatility. One is for towing, which will give you good power and low-end torque without excessive EGTs or strain on the engine, and it will help with fuel economy during those lengthy hauls. There’s another tune that’s designed to improve fuel economy in daily driving situations, and then there’s a third tune that’s specifically for performance, which gives you the maximum amount of power that the factory truck can safely deliver. It also improves throttle response and overall drivability, and transmission shift points as well as converter lockup strategies are adjusted to complement those changes. And the CTS3 can serve as a dash display for real-time monitoring too, allowing you to keep on eye on things like fluid temperatures and other parameters that are important to be aware of when you’re towing.”

The Evolution CTS3 designed for Ford Super Duty trucks ranging from 1999 all the way to 2019 under one part number (85400-100). That keeps things simple while also allowing you to bring your device along for the ride if you, for example, make the jump from a first-generation Super Duty to a third-gen.

Nearly two million examples of the 7.3-liter Power Stroke were built during its run. While it’s generally considered one of the most reliable diesel engines ever put into production, there are a few common issues to be aware of. The camshaft position sensor is common failure point, which can cause stalls as well as the inability to start the engine. The UVCH (Under Valve Cover Harness) is another one to keep on your radar, which had a reputation for losing contact with the glow plugs or the injectors, which can result in rough starts and/or misfires.

6.0-liter Power Stroke diesel V8 (2003 – 2007)

Introduced as a replacement for the 7.3-liter Power Stroke in 2003, roughly midway through the first-generation Super Duty’s production run, the 6.0-liter Power Stroke diesel V8 introduced a number of changes that stirred up some controversy.

“The transition to the 6.0-liter was really driven by stricter emissions requirements,” White says. “The OEs wanted to produce more power while also delivering lower emissions to meet the EPA requirements. To do so with the Power Stroke, Ford moved to a variable geometry turbocharger, and they also introduced the EGR coolers.”

Power was up substantially, and with the upgrade from a four-speed automatic to a five-speed unit as well as a switch from leaf springs to coils for the front suspension in 2005, the Super Duty trucks offered improved drivability as compared to the predecessors. But some potential issues were on board as well.

“The 6.0-liter has kind of a ‘negative aura’ in this space,” White jokes. “In the early days they had issues with the injectors, EGR system problems, and head gaskets blowing. But it is a platform that can be very reliable with the right aftermarket support, and the 6.0-liter has a strong following with the folks who know what needs to be addressed. This engine platform responds really well to modified variable turbo upgrades like the ones offered by KC Turbos, and the rest of the drivetrain has no problem handling the additional power. And of course the Edge Evolution CTS3 works hand in hand with an upgrade like that.”

Shop all Edge Evolution CTS3 tuners here.

6.4-liter Power Stroke diesel V8 (2008 – 2010)

Introduced under the hood of the then-new second generation Super Duty, White says that the 6.4-liter Power Stroke is arguably the most controversial diesel engine that’s been offered in a Super Duty truck, but it too has its virtues.

“As far as the truck itself goes, it wasn’t a huge overhaul,” he says. “The bodywork was updated and the interior was given a revamp, but it otherwise stayed mostly the same. The engine was the big change. The new 6.4-liter Power Stroke V8 was based on the same engine architecture as the 6.0, but I think Ford needed to increase the displacement again in order to get the power numbers where they wanted them to be because of the new emissions systems that they had to add on. The DPF (Diesel Particulate Filter) and EGR (Exhaust Gas Recirculation) systems were being implemented across the industry at that time, and it was new tech for everyone – Ford included.”

White notes that Ford kept a variable geometry design for its turbocharger on the 6.4 Power Stroke, but they added a larger atmosphere turbo to the mix, effectively creating a factory compound turbo system.

“So you get the immediate low-end response as well as the top end power,” he says. “But it was problematic in the long run. They had a lot of problems with the turbo vanes sticking closed, which would spool up the turbo quickly, but it would also create additional backpressure because the exhaust couldn’t get out of the turbocharger efficiently. And that caused excessive EGTs along with the backpressure, which in some cases led to outright engine failures – blown head gaskets, cracked pistons, and things like that. They also had problems with the DPFs not being able to regen and clean themselves efficiently, so they could clog up with soot, which also led to excessive back pressure.”

Replacing an aging DPF with a new OE part is the best way to address the issue while maintaining emissions compliance, but it’s a costly endeavor. White says this is why folks tend to avoid this era of diesel-powered Super Duty trucks.

6.7-liter Power Stroke diesel V8 (2011 – Current)

While the diesel engines that were on offer in Super Duty trucks had previously been developed by International Truck and Engine Corporation, the introduction of the 6.7-liter diesel V8 in 2011 represented the first Power Stroke engine that was designed and manufactured in-house by Ford. The automaker took a clean-sheet approach to the engine’s development, and with that came some radical changes.

“It was a completely different look at how engines are built – they changed virtually everything,” says White. “For example, they moved the exhaust ports to the inside of the cylinder heads and put the manifolds to the inside of the V8 ‘valley’ to shorten the distance between the exhaust port and the turbocharger inlet to reduce turbo lag. They also went back to a single turbocharger, but this one had dual compressor wheels and two intake inlets, and that was done in an effort to deliver that low-end response while also maintaining top-end power.”

This new approach resulted in another significant jump in horsepower and torque, and its new compacted graphite iron block material increased the block’s strength while reducing weight. The switch to from an air-to-air to an air-to-water intercooler design as well as the introduction of a new six-speed automatic gearbox also further enhanced the Super Duty’s capability, but that new turbo design had some troubles of its own early on.

“It ended up being a bit of an Achilles' heel for the 2011 to 2014 model years,” says White. “Turbocharger failures due to overspeeding became commonplace, even in completely stock trucks. They moved back to a more traditional variable geometry turbo in 2015, a design that was very similar to what was used in the 6.0-liter Power Stroke.” White also tells us that Ford, along with a number of aftermarket suppliers, now offer a retrofit kit to replace the turbo on 2011 to 2014 6.7-liter Power Stroke engines with the updated design from 2015. “It’s mainly for durability, but the new turbo also supports higher horsepower levels.” And whether you’re keeping the turbo system as-is or making the jump to this retrofit design, he recommends pairing it with an Edge Evolution CTS3 (85400-100)to apply tunes, whether those tunes are pre-loaded or custom calibrations.

As the Super Duty line has advanced in the years since, Ford has continued to update the 6.7-liter Power Stroke diesel V8 as well. The introduction of the fourth-generation Super Duty in 2017 marked the first all-new chassis design since the Super Duty’s original debut in 1999. Along with a new high-strength steel frame and new aluminum bodywork that helped the truck shed hundreds of pounds, the Super Duty also benefited from a substantially revised cabin that brought even more civility to the proceedings. A refresh for 2020 included swapping out the six-speed automatic gearbox for a new 10-speed unit, along with improvements to 6.7-liter Power Stroke’s injector design as well as a move to a larger variable geometry turbo for even more power.

“The Edge Evolution CTS3 is a great tuning device for these trucks too,” says White. “One thing I like about it for these later model Super Trucks is that you can monitor for DPF regeneration status, and you can also perform a manual DPF regen if you want to. Sometimes that can be handy if the vehicle isn’t doing so automatically. Being able to perform a manual regen means you don’t have to plan your drive route around the automatic regen system’s criteria. It’s something you can just do in your driveway.”

The 6.7-liter Power Stroke diesel V8 continues to be offered in the fifth-generation Super Duty line that’s in Ford showrooms today. Now available in both standard and high-output iterations, the latter boasts a unique piston design and a different turbo to push power levels to unprecedented heights. But while the Super Duty line of trucks and the Power Stroke diesel V8s are now arguably better than they’ve ever been before, White says there is an issue that late model Super Duty owners need to keep in mind.

“The one thing to call out with the 6.7 is the CP4 injection pump. Ford has had issues with the pump basically coming apart in higher mileage vehicles, and when it does, it sends metal shavings into the fuel system, which wipes out the injectors and requires the tank to be flushed and the fuel lines replaced. It can be a very expensive proposition. There are aftermarket solutions – S&S Diesel offers a DCR conversion kit that uses a totally different injection pump design. There are also companies that offer a filtration kit that protects the fuel system from those metal shavings if the pump does give up the ghost. But then you still need a new pump, so that’s really just insurance against further damage from the pump failure.”

With 2023-to-current Super Duty trucks, White points to the Edge EZX module as the best option to get big power, drivability, and quality-of-life improvements without running afoul of the existing warranty. “This is an inline module design, so we’re not flashing computer, which means it’s not going affect your warranty or your ability to take the vehicle to the dealer for service.”

It also provides you the ability to control power levels on the fly, and you can pick up as much 70 horsepower and 180 pound-feet of torque with no hardware changes whatsoever.

Shop Edge EZX modules here.

“I might be a little biased because I’m a Ford guy, but I genuinely believe that the Super Duty is the least problematic line of heavy-duty trucks out there,” he adds. “Everyone has issues that come up, but at the end of the day, I think the Super Duty has earned that distinction over the years that this series has been in production. And the Power Stroke V8 has always been an integral part of that.”

Super Duty, Super Stopping Power

For 2013-and-up Ford Super Duty owners looking to improve stopping performance without the cost of a full big brake kit, the Big Claw HD performance rotor kits deliver a practical and effective solution. These true bolt-on upgrades feature larger diameter rotors—often increasing size by 1 to 2 inches depending on the application—which enhance braking torque and leverage for noticeably shorter stopping distances, with testing showing reductions of up to 20 feet from 60–0 mph.

The purpose-cast, directionally vaned rotors are engineered to improve cooling efficiency, helping reduce brake fade while maintaining a firm, consistent pedal feel under demanding conditions.

Built for durability and ease of installation, the Big Claw HD lineup is designed specifically with trucks like the Ford Super Duty in mind. Each kit includes zinc-plated rotors and caliper anchor brackets for corrosion resistance and a clean appearance behind open wheels. The Big Claw HD, ideal for 3/4- and 1-ton trucks, uses a slot-only design for maximum pad contact and heavy-duty performance. Installation is straightforward, requiring only basic hand tools with no need for brake bleeding, and the system retains OEM pad compatibility for simple future maintenance.

Shop Baer Brakes Big Claw HD front rotors for 2013 to 2022 F-250/350 Super Duty here.

Shop Baer Brakes Big Claw HD rear rotors for 2013 to 2022 F-250/350 Super Duty here.

Shop Baer Brakes Big Claw HD front rotors for 2023 to 2026 F-250/350 Super Duty here.

Shop Baer Brakes Big Claw HD rear rotors for 2023 to 2025 F-250/350 Super Duty here.