July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Engine Firing Order - 5.7L
WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Engine Firing Order- 5.7L
Courtesy of CHRYSLER LLC
The firing order for the 5.7L V-8 is 1-8-4-3-6-5-7-2.