July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Spark Plug Gap
Spark plug gap 4.2L 2 valve 0.052-0.056 inch (1.32-1.42mm) Spark plug gap 4.6L 3 valve 0.039-0.043 inch (1.0-1.1mm) Spark plug gap 5.4L 0.039-0.043 inch (1.0-1.1 mm)