2.7L and 3.5L Engines Firing order: 1-2-3-4-5-6 Distributorless ignition
the cylinders on the passenger side are numbered (from front to back) as follows: 1-3-5 The cylinders on the driver's side are numbered: 2-4-6

5.7L Engine Firing order: 1-8-4-3-6-5-7-2 Distributorless ignition
The cylinders on the driver's side are numbered: 1-3-5-7
The cylinders on the passenger's side are numbered: 2-4-6-8