Firing Order

1-8-4-3-6-5-7-2

Ignition Timing - 454 and HT502

4° BTDC @ 650 RPM - Initial

26° @ WOT - Total

Ignition Timing - 502

10° BTDC @ 650 RPM - Initial

26° @ WOT - Total

Ignition Timing - 572

10° BTDC @ 950 RPM - Initial

26° @ 4000 RPM - Total

Spark Plug Torque - 454 and 502

30 N·m

22 lb ft

Spark Plug Torque - 572

34 N·m

25 lb ft