The Ford 5.4 Triton is a 5.4-liter (330 cubic inch) single-overhead-cam V8 from Ford’s modular engine family, built in two-valve and three-valve versions for the F-150, Expedition, Navigator, Super Duty pickups and E-Series vans. Its bore and stroke are 3.552 x 4.165 inches, and its firing order is 1-3-7-2-6-5-4-8. Three-valve F-150s from the mid-2000s are rated at about 300 to 310 hp and 365 lb-ft; two-valve versions are rated lower. Ratings vary by year and vehicle, so check your documentation for the exact figure.
5.4 Triton specs
| Spec | Value |
|---|---|
| Configuration | V8, single overhead cam per bank (modular) |
| Displacement | 5.4 L (330 cu in) |
| Bore x stroke | 3.552 x 4.165 in |
| Valves | 2 per cylinder (2V) or 3 per cylinder (3V) |
| Firing order | 1-3-7-2-6-5-4-8 |
| Three-valve F-150 rating | About 300 to 310 hp and 365 lb-ft, by year |
Two-valve vs three-valve
The two-valve engine came first and continued in Super Duty and van applications; the three-valve version added variable cam timing and more power for the F-150 and Expedition. The three-valve’s cam phasers and timing chain system make oil quality especially important; see 5.4 Triton problems.
Cylinder numbering
Ford numbers the passenger-side bank 1 to 4 from front to back and the driver-side bank 5 to 8; see firing order for the layout.
Stroke and character
The long stroke relative to bore favors low-speed torque over high-rpm power, which suits heavy trucks and vans. See what does a crankshaft do? for how stroke shapes an engine.
Where the 5.4 was used
Beyond the F-150, the 5.4 powered the Expedition and Lincoln Navigator, F-250 and F-350 Super Duty pickups, and E-Series vans. Engines are not always interchangeable between these vehicles because accessories, oil pans, intakes and computer calibrations differ, so match a replacement engine to your exact vehicle and year.
Identifying your engine
The eighth character of the VIN identifies the engine on Ford vehicles, and the valve cover shape helps tell a two-valve from a three-valve engine at a glance.
Oil and maintenance
Use the oil grade and capacity in your owner’s manual, and change it on schedule; the three-valve engine is sensitive to oil condition. Spark plug removal procedures differ between two-valve and three-valve heads; see how often to change spark plugs.
Replacement engines
We list Ford 5.4 engines for 2004 to 2008 and 2008 to 2016 applications at $3,999.00; see 5.4 Triton engines, how long a 5.4 Triton lasts and 5.4 Triton vs 5.3.
Shipping is a flat $80.00 per order to US addresses, with 15-day free returns. Questions? Ask a parts specialist.