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ENGINE DATA Engine 1 4.6L V8 engine 5.4L V8 engine 6.8L V10 engine Cubic inches 281 330 415 Required fuel 87 octane or 2 87 octane 87 octane Firing order 1-3-7-2-6-5-4-8 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 Coil on plug Spark plug gap 0.052–0.056 inch 0.051–0.057 inch 0.052–0.056 inch Compression 9.4:1 9.0:1 9.0:1 1 Refer to the 6.0 and 6.4 Liter Power Stroke Direct Injection Turbo 2 4.6L V8 FFV engines only. Engine drivebelt routing • 4.6L V8, 5.4L V8 and 6.8L V10 engines without A/C Maintenance and Specifications 309 |