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)