ENGINE DATA
Engine
5.4L V8 engine
6.8L V10 engine
Cubic inches
330
415
Required fuel
87 octane
87 octane
Firing order
1-3-7-2-6-5-4-8
1-6-5-10-2-7-3-8-4-9
Spark plug gap
1.0–1.1mm
(0.039–0.043 inch)
1.0–1.1mm
(0.039–0.043 inch)
Ignition system
Coil on plug
Coil on plug
Compression ratio
9.8:1
9.2:1
Drivebelt routing
5.4L V8/6.8L V10 engines
IDENTIFYING YOUR VEHICLE
Safety Compliance Certification Label
The National Highway Traffic Safety
Administration Regulations require
that a Safety Compliance
Certification Label be affixed to a
vehicle and prescribe where the
Safety Compliance Certification
Label may be located. The Safety
Compliance Certification Label is
located on the structure by the
trailing edge of the driver’s door or
the edge of the driver’s door.
Maintenance and Specifications
395
2010 F-250/350/450/550
(f23)
Owners Guide, 2nd Printing
USA
(fus)