ENGINE SPECIFICATIONS
Engine 5.4L V8 engine 6.8L V10 engine
Cubic inches 330 415
Required fuel
Minimum 87 octane or
E85
Minimum 87
Firing order 1-3-7-2-6-5-4-8 1-6-5-10-2-7-3-8-4-9
Ignition system Coil on plug Coil on plug
Spark plug gap
0.051–0.057 inch
(1.29–1.45 mm)
0.052–0.056 inch
(1.32–1.42 mm)
0.051–0.057 inch
(1.29–1.45 mm)
(With CNG Prep
Package)
Compression ratio 9.0:1 9.0:1
Engine Drivebelt Routing
• 5.4L V8 and 6.8L V10 engines without A/C
Capacities and Specifications 241
2015 Econoline (eco)
Owners Guide gf, 2nd Printing, December 2014
USA (fus)