What engine does the F-550 have?
The F-550 typically uses a 6.7-liter Power Stroke V8 turbo diesel; an optional gasoline engine, the 7.3-liter V8, is available in certain configurations and model years.
In this report, we examine the current engine lineup for the Ford F-550, how the options influence performance and durability, and what buyers should consider when choosing between diesel and gasoline. Availability varies by year, configuration, and region, so check the exact build with a Ford dealer or the vehicle’s build sheet.
Current engine options for the F-550
Here are the main engine choices you’ll encounter on recent F-550 chassis cab models. Availability can vary by year and configuration.
- 6.7L Power Stroke V8 Turbo Diesel — the standard and most common engine on recent F-550s; delivers high torque for towing and heavy payloads.
- 7.3L V8 Gasoline — an optional gasoline engine for select configurations; provides strong horsepower with a gasoline-fueled option in certain fleets.
Note: Some older or regional builds may have different gasoline options or legacy engines. Always verify your specific build sheet or with a dealer for your year and configuration.
Historical context
Historically, the Ford Super Duty line included various gasoline options such as the 6.2L V8 in older generations, while Ford introduced the 7.3L V8 “Godzilla” gasoline engine to broaden the lineup for heavy-duty trucks, including certain F-550 configurations, starting in the late 2010s and into the 2020s. The diesel option remains the workhorse for high payloads and demanding towing.
Why engine choice matters for the F-550
Engine selection affects torque, payload, fuel economy, and maintenance. The diesel option typically provides superior torque at low RPMs for heavy-duty work, while the gasoline option can offer a different balance of power, refueling practicality, and upfront cost depending on fleet needs.
- Torque and towing capacity: Diesel engines generally deliver more low-end torque, boosting payload and heavy towing performance.
- Fuel availability and maintenance: Gasoline engines may be cheaper to service in some regions; diesel fueling and maintenance schedules differ and can influence total cost of ownership.
When choosing an engine, consider typical payload, expected towing, duty cycle, and fuel availability. A Ford dealer can help tailor the configuration to your operation.
Summary
As of the latest model years, the F-550 is most commonly equipped with a 6.7L Power Stroke V8 Turbo Diesel, with an optional 7.3L V8 Gasoline engine offered for select configurations. Engine availability can vary by year and region, so always verify the exact engine for your specific build.
