Does a Gas F-350 Have More Payload Than a Diesel F-450?

Yes. In the Ford Super Duty lineup available in Canada, a gas-powered F-350 can have a higher maximum payload rating than a diesel-powered F-450, depending on the configuration. Ford offers a maximum available payload of 8,000 lb for a gas Super Duty, compared with 6,952 lb for a diesel Super Duty. The important detail is that these are maximum figures for specific configurations, not a blanket payload rating for every F-350 and F-450.

So if you are comparing an F-350 with a gas engine to an F-450 with the 6.7L Power Stroke diesel, the F-350 may carry more payload.

Why Can a Gas F-350 Have More Payload?

Payload is not determined simply by the truck’s numerical designation or whether it has a gas or diesel engine.

The basic calculation is:

Payload = GVWR − vehicle weight

The engine matters because the diesel powertrain adds weight. That extra weight takes up part of the truck’s available payload capacity when the vehicle’s GVWR stays the same. 

For an F-350 SRW 4×2 Regular Cab with a 141.5-inch wheelbase, the maximum payload figures listed are:

• 6.8L gas: 7,744 lb
• 7.3L gas: 7,635 lb
• 6.7L diesel: 6,952 lb
• 6.7L High Output diesel: 6,935 lb

There is also a 6.8L gas configuration with an 8,000-lb maximum payload. That means the gas F-350 can indeed have a higher published payload rating than the diesel F-450 in some configurations.

What About the F-450 Diesel?

The F-450 Super Duty is a diesel-only pickup configuration: the standard 6.7L Power Stroke diesel and an available 6.7L High Output Power Stroke diesel. For the F-450 DRW pickup, payload figures are lower than the maximum payload for the gas F-350.

For example, a 4×2 Regular Cab F-450 with the standard 6.7L diesel is listed at 6,322 lb of maximum payload, while the 6.7L High Output diesel version is listed at 6,305 lb. A 4×4 Regular Cab diesel F-450 is listed at 5,953 lb with the standard diesel and 5,938 lb with the High Output diesel.

The difference becomes more pronounced with heavier cab configurations. A 4×2 Crew Cab F-450 with the standard diesel is listed at 5,651 lb of maximum payload, while the 4×4 Crew Cab is listed at 5,319 lb.

Why Does the F-450 Still Have a Higher Number?

The F-450 is not designed around payload alone. It includes hardware intended for heavy-duty applications. For example, the F-450 uses 19.5-inch dual-rear-wheel wheels, larger brakes than the F-350, and a different front suspension configuration. Ford lists 391-mm front and 400-mm rear brake rotors for the F-450, compared with 363-mm rotors at both ends of the F-350.

The F-450 also has a higher towing capability in certain configurations. So, a lower payload on an F-450 doesn’t mean the truck is generally less capable. Payload and towing capacity measure different aspects of the truck’s capability.

Payload and Towing Are Different Ratings

This distinction matters most when comparing a gas F-350 with a diesel F-450.

Payload is the weight the truck can carry. It includes things such as:

• passengers
• cargo in the bed
• cargo inside the cab
• a fifth-wheel or gooseneck hitch
• other equipment added to the truck

Towing capacity concerns the weight of a trailer being pulled by the truck. The Ford Super Duty lineup reaches a maximum available 40,000 lb gooseneck towing capacity, while maximum available payload is listed at 8,000 lb for gas models and 6,952 lb for diesel models. That’s why you shouldn’t choose between an F-350 gas and an F-450 diesel based on payload alone.

Does the Gas Engine Always Give the F-350 More Payload?

The 8,000-lb gas payload figure is a maximum available rating, not what every gas F-350 can carry. Ford explicitly states that trim level, options and passengers reduce payload capability. The actual carrying capacity for a particular truck is shown on its certification label. For example, published F-350 SRW figures vary considerably by cab, drivetrain, and engine.

A 4×4 Regular Cab F-350 with the 6.8L gas engine offers a maximum payload of 7,340 lb, while the standard 6.7L diesel offers 6,519 lb. A 4×4 Crew Cab F-350 has lower figures because of the additional vehicle weight. So the correct question is not simply “gas F-350 or diesel F-450?” It is which specific configuration has the payload required for the job?

What Should You Check Before Comparing Them?

If you are deciding between a gas F-350 and a diesel F-450, check the specifications for the exact trucks rather than relying on the model name.

1. Check the GVWR

The gross vehicle weight rating establishes the maximum permitted loaded weight of the truck.

2. Check the listed payload

Ford specifications provide maximum payload figures by configuration, but the actual truck can have a lower payload because of its equipment and options.

3. Consider the cab and drivetrain

A Regular Cab 4×2 can have substantially more available payload than a heavier Crew Cab 4×4 configuration.

4. Account for passengers and equipment

The published payload number is not the amount of cargo you can simply add to the truck. Passengers and installed equipment use part of that capacity.

5. Check the certification label on the truck

Trim, options, and passengers can reduce an individual vehicle’s payload capability. The vehicle’s door-jamb label provides the relevant carrying-capacity information for that specific truck.

F-350 vs F-450: Which Has More Payload?

If you’re comparing a gas F-350 with a diesel F-450, the answer may be the gas F-350.

For the Ford Super Duty lineup, maximum available figures are 8,000 lb for gas-powered configurations and 6,952 lb for diesel-powered configurations. The F-350 SRW can therefore have a higher maximum payload rating than a diesel F-450 DRW.

However, don’t interpret those numbers as universal ratings for every F-350 and F-450. Configuration, cab style, drivetrain, engine, options and actual vehicle equipment all affect the final payload.

The key takeaway is that a gas F-350 can have more payload than a diesel F-450, even though the F-450 is the larger model. If payload is the priority, compare the actual payload rating of the specific trucks you are considering rather than assuming the F-450 will always carry more.

Disclaimer: Content contained in this post is for informational purposes only and may include features and options from US or internacional models. Please contact the dealership for more information or to confirm vehicle, feature availability.