What Is the Biggest Ford Truck, and When Do You Need a Super Duty?

Kerry Irven

Oct 1

9 min read

Updated: 2 days ago

A woman in a navy coat and blue work gloves holding a white feed sack at the lowered tailgate of a white full-size pickup on a gravel farm lane, a young man carrying a sack on his shoulder in front of a steel pasture gate, black cattle and a round hay bale feeder in the field behind.

What is the biggest Ford truck? Taken literally, the answer is the F-650 and F-750, the highest-numbered F-Series trucks in Ford's lineup, which Ford calls Medium Duty trucks.

The top of Ford's pickup ladder is the 2027 F-450 Super Duty, which Ford lists with dual rear wheels. For most buyers, the real question is where to stop between the F-150 and the F-450.

Ford answers part of that on its 2027 Super Duty models page. For the rest, we give you our own advice.

If you are carrying feed, fencing or a crew's tools out past Pakenham and wondering whether your F-150 has run out of room, this is written for you.

Key Takeaways

The literal answer is commercial. The F-650 and F-750 are the highest-numbered F-Series trucks in Ford's lineup, and Ford calls them Medium Duty trucks.
The pickup ladder tops out at the F-450. Ford's 2027 Super Duty pickups are the F-250, F-350 and F-450, and its Super Duty page shows "15 models available".
Rear wheels are the first real decision. Ford explains single versus dual rear wheels on its 2027 models page.
The F-350 is the rung with the choice. Ford's 2027 F-350 XL page lists single and dual rear wheels, and Ford lists its 2027 F-450 configurations as dual rear wheel.
The 2027 F-250 and F-350 list the 7.3L V8 gas engine with the available 6.7L High-Output Power Stroke diesel. The F-450 is diesel-only, with the 6.7L High-Output Power Stroke standard.
Where to stop is our advice, not Ford's. Compare your heaviest regular load against the exact truck's ratings, because ratings vary by configuration.

The Literal Answer: The F-650 and F-750

The highest-numbered F-Series trucks in Ford's lineup are the F-650 and F-750, which Ford calls Medium Duty trucks. They are commercial trucks, built as a cab and frame for a body to be fitted, rather than pickups with a box on the back.

Ford's models page lists gas and diesel "Straight Frame" versions of both. Its capability page puts the cab choice plainly: "Choose the Ford Medium Duty that will get your work done: Regular Cab, SuperCab or Crew Cab."

Ford currently lists the F-650 and F-750 as 2026 Medium Duty trucks.

Between the pickups and the medium-duty trucks sits the 2026 Super Duty Chassis Cab, in F-350, F-450, F-550 and F-600 versions. Ford says it "can be extensively customized to suit both independents and fleets."

Neither is a retail pickup, so the rest of this article stays on the pickup ladder.

Ford's Pickup Ladder, from the F-150 to the F-450

Above the F-150, Ford's 2027 Super Duty pickups come in three rungs: the F-250, F-350 and F-450. Ford's Super Duty page shows "15 models available" across them, with trims named XL, XLT, Lariat®, King Ranch® and Platinum®.

What separates the rungs comes down to three choices: the rear wheels, the cab and box, and the engine.

The F-150 itself is covered in our F-150 trims guide, so this one starts where the Super Duty does.

2027 Super Duty	XL cabs, from Ford's XL and models pages	Rear wheels on Ford's pages
F-250	Regular Cab, SuperCab™, Crew Cab	Single (SRW)
F-350	Regular Cab, SuperCab™, Crew Cab	Single (SRW) or dual (DRW)
F-450	Regular Cab, Crew Cab	Dual (DRW)

The cab column covers the 2027 XL only, as Ford lists it, not every trim.

A customer and a saleswoman holding a blue folder at the lowered tailgates of two full-size pickups parked side by side on a vehicle lot, a silver crew cab on the left and a navy regular cab on the right, with rows of pickups behind.

Single or Dual Rear Wheels: What Ford Says

The biggest decision on the ladder is single or dual rear wheels, and Ford answers it directly on its own 2027 Super Duty models page, under the question "What are the key differences between dual rear wheel and single rear wheel?"

Ford, on single rear wheels: "Single rear wheel (SRW) has one wheel on each side of the rear axle. This option is best suited for light to moderate towing and everyday driving, as it offers better manoeuvrability."

Ford, on dual rear wheels: "Dual rear wheel (DRW) has two wheels on each side of the rear axle. This option is ideal for heavy-duty towing and hauling due to its greater stability, higher towing and payload capacity, and improved weight distribution."

On the 2027 ladder, the F-350 is where that choice runs both ways: its XL page lists single-rear-wheel and dual-rear-wheel versions. Ford lists its 2027 F-450 configurations as dual rear wheel, in names such as "F-450 XL Regular Cab 4x2 DRW".

Ford's 2027 models page lists the F-250 on single rear wheels, below that choice.

A woman crouched on the gravel beside the two side-by-side rear tires of a charcoal full-size pickup with dual rear wheels, holding a blue tire pressure gauge to the outer wheel, with concrete-block bays of mulch and crushed stone and a skid-steer loader behind.

Cab and Box: What Each Rung Lists

Ford's 2027 XL pages show the cab and box choices narrowing as you climb. The F-250 lists three cabs and two box lengths, the F-350's short box is single-rear-wheel only, and the F-450 XL lists a Regular Cab or Crew Cab with the long box.

On the 2027 F-250 XL page, Ford lists the "Regular Cab: Available with a 2.4 metre (8-foot) bed." The SuperCab™ and Crew Cab are each "Available with a 2.1 or 2.4 metre (6.75 or 8-foot) bed."

On the 2027 F-350 XL page, the SuperCab™ and Crew Cab lines read "Available with a 6.75-foot (SRW only) or 8-foot bed."

The 2027 F-450 XL page lists the Regular Cab and the Crew Cab, each "Available with a 2.4 metre (8-foot) bed." That list covers the XL only.

On all three 2027 XL pages, Ford calls the Crew Cab the "Largest cabin option."

Two men with cedar fence posts at a navy crew-cab pickup parked in a field, the posts loaded in its long box with the tailgate down, one man holding a post at the tailgate and the other carrying one on his shoulder in front of a new line of fence posts, a roll of wire fencing and a tractor with a post-hole auger beyond.

Gas or Diesel on Each Rung

Ford says the 2027 Super Duty offers "two uncompromising engine options: a powerful gas and a robust diesel." The 2027 F-250 and F-350 list the 7.3L V8 gas engine with the available 6.7L High-Output Power Stroke diesel.

The F-450 is diesel-only, with the 6.7L High-Output Power Stroke standard. The 7.3L gas engine is not available on the F-450.

Ford's full names for the two engines on its 2027 pickups are the "7.3L 2V DEVCT NA PFI V8 Gas engine" and the "6.7L High-Output Power Stroke V8 Turbo Diesel B20 engine".

Our advice is to settle the rung first. Choose the F-450 and the diesel comes with it; on the F-250 or F-350, the engine choice is easier once the rear wheels, cab and box are decided.

A man in a blue toque standing beside the box of a black full-size pickup on a gravel farmyard, a fuel nozzle in the pickup's open filler and a black hose running from it to a white fuel tank on a steel stand, with a machine shed, a grain wagon and a grain bin behind.

Where to Stop on the Ladder: Our Advice

Our advice, not Ford's: stop at the lowest rung that does your work every week, not the one that covers a job you do once a year. Rear wheels decide most of it, then the cab and box, then the engine.

Stay with the F-150 if it is not short of anything you can name. Our guide to which F-150 fits your work is the better next read.

Stop at the F-250 when Ford's single-rear-wheel answer sounds like your week, keeping in mind that a single-rear-wheel F-350 fits that description too. This article does not compare the rungs' weight ratings, so bring us the job and we will work out which of the two fits it with you.

Stop at the F-350 when you want to keep the choice open. It is the 2027 rung where Ford offers single or dual rear wheels, so the decision can follow the work rather than the badge.

Go to the F-450 when Ford's dual-rear-wheel answer describes your regular work. On the 2027 XL page, that means a Regular Cab or Crew Cab with the long box.

Past the F-450 pickup, Ford's lineup moves to trucks built for a body to be fitted. Those are the 2026 Super Duty Chassis Cab and the Medium Duty F-650 and F-750, not pickups.

A crew of four and a box of fence posts on a Beckwith concession road is a Crew Cab and box decision before it is a rung decision. If a trailer is the reason you are asking, our article on what a Ranger is rated to pull shows how we read a tow rating.

Before choosing a rung, compare your heaviest regular loaded trailer, cargo and payload, including passengers, equipment and hitch weight, against the exact truck's door-jamb payload label and applicable Ford tow guide. Ratings vary by configuration.

Not sure which rung? Tell somebody at Carleton Place Ford your heaviest regular job, not the heaviest possible one, and we will walk the ladder with you.

A woman in a white hard hat lifting a blue tool chest over the side of a silver full-size pickup's box loaded with lumber, as a man in a white hard hat carries boards on his shoulder across a building site, a timber house frame on a concrete foundation and a mini excavator behind.

Your Trade, Your Financing and Ordering the Right Build

If you are stepping up from the truck you already own, start with it. Value your trade online, then bring it in to Carleton Place Ford: we take trades of any make, whether it is paid off or not, and we put our appraisal of your trade in writing.

We buy vehicles outright, so an appraisal does not commit you to buying from us. With your permission, we get the payout from your lender and show it beside our appraisal.

If approved, some or all of the difference may be included in a new finance agreement; that increases the amount financed and total borrowing cost. You may also cover the difference with money down.

Apply for financing before you come in if you wish. With your consent, we can review options with participating lenders, on approved credit (O.A.C.).

Approval, rate, term and payment depend on the applicant, lender and vehicle, and a credit-bureau inquiry may be required.

If Ford's order bank, dealer allocation and your preferred configuration are available, we can review the build and help you submit an order. Availability, order acceptance, timing and pricing are subject to Ford and dealer confirmation.

Or look through our new Ford inventory with the rung you have settled on in mind.

Once it is working, book it in for service with us. You can come to us for parts and accessories, and for open Ford recall campaigns applicable to your vehicle, subject to parts availability and appointment scheduling.

A couple seated side by side at a white desk looking at a printed sheet on the desk in front of them, a woman in a navy blazer facing them across the desk, with a set of keys and a blue pen on the desk and pickups parked outside the glass wall behind.

Frequently Asked Questions

What is the biggest Ford truck?

Ford currently lists the F-650 and F-750 as 2026 Medium Duty trucks.

What is the biggest Ford pickup truck?

The top of Ford's 2027 Super Duty pickup ladder is the F-450, which Ford lists with dual rear wheels. The F-450 is diesel-only, with the 6.7L High-Output Power Stroke standard.

On its 2027 XL pages, Ford calls the Crew Cab the "Largest cabin option."

What is the difference between the F-250, F-350 and F-450?

Ford's 2027 models page lists the F-250 on single rear wheels, the F-350 with single or dual rear wheels, and the F-450 configurations as dual rear wheel. We do not compare their weight ratings here, so bring us the job and we will work out the right rung with you.

How many Ford Super Duty models are there?

Ford's Super Duty page shows "15 models available" for 2027, across the F-250, F-350 and F-450. Ford names the trims XL, XLT, Lariat®, King Ranch® and Platinum®.

Is the Ford F-450 a dually?

Yes. Ford lists its 2027 F-450 configurations as dual rear wheel, in names such as "F-450 XL Regular Cab 4x2 DRW", and its 2027 F-450 XL page lists a Regular Cab or Crew Cab, each "Available with a 2.4 metre (8-foot) bed."

Does the Ford Super Duty come with a gas engine or a diesel?

Both — Ford says the 2027 Super Duty offers "two uncompromising engine options: a powerful gas and a robust diesel."

The 2027 F-250 and F-350 list the 7.3L V8 gas engine with the available 6.7L High-Output Power Stroke diesel. The F-450 is diesel-only, with the 6.7L High-Output Power Stroke standard.

Why size up your next truck with Carleton Place Ford?

Because the right rung is the one your regular work needs, and that is easier to judge in conversation than from a spec page. Bring your crew size, what rides in the box and how often, and somebody at Carleton Place Ford will walk Ford's 2027 Super Duty ladder with you.

If a smaller truck might be all your work needs, our Maverick and F-150 comparison starts the ladder a rung lower.

Start with our featured new Ford inventory. Ask about a Super Duty when you come in to Carleton Place Ford.

Sources checked 2026-10-01: Ford Canada's 2027 Super Duty pages and its commercial-truck pages.

Visit us at 10441 Hwy 7, Carleton Place, ON K7C 0T6

Browse inventory, value your trade, apply for financing (on approved credit), book service, or contact the team.

Sales: (888)-910-3538 Parts: (888)-876-1102 Service: (877)-866-8810 Local: 613-257-3988

About the Author:

Kerry Irven is the Vice President of New and Used Automotive Operations for Heighton Automotive Group, a family-owned and operated automotive group serving communities across Eastern Ontario. Kerry began his automotive career in new-car sales, building his experience on the showroom floor and working his way through multi-store dealership operations.

With over 25 years in the automotive industry, Kerry has helped grow automotive businesses from one location with 40 to 50 vehicles in stock to more than 500 vehicles across 10 rooftops. His hands-on background in both new and used-vehicle operations gives him a practical understanding of what customers look for when shopping for their next vehicle.

Throughout his career, Kerry has always been actively involved in staff coaching and in understanding customer wants and needs, helping ensure the businesses he works with continue to adapt to what customers are truly looking for.

One of the most exciting chapters of his career has been the shift into modern automotive marketing, embracing new technology, transparent pricing, customer-first inventory strategies, and new ways to create a better vehicle-shopping experience.

Kerry has completed extensive automotive training, including certification through the Ontario Motor Vehicle Industry Council, involvement with the Used Car Dealers Association of Ontario, Canadian automotive dealer training, and multiple customer service courses.

Born and raised on a farm, Kerry has always valued family, hard work, and a practical, down-to-earth approach. Joining Heighton Automotive Group and working alongside Thomas Heighton and family, along with managing partners Kyle Lothian and Martin Gougeon, has allowed him to bring those same values into the car business. It has also allowed Kerry to continue following a simple philosophy: treat every customer exactly the way he would want to be treated.

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