What is the firing order for 5.7 vortec?

18436572

driver side starting from the front is 1357 passenger is 2468

the cap is numbered right on it. make sure you twist and pull to remove the wires from the cap or you may break it. do not use a cheap cap and always use ac delco plugs in a vortec, the computer is extremely touchy as far as counting misfires in those vehicles.