A number 7 on a mark 8 is on the third one back on the driver's side.
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
FIREWALL 4 - 8 3 - 7 2 - 6 1 - 5 FRONT
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle ( for the 4.6 and 5.4 liter GASOLINE V8 engines )
4 - 8 3 - 7 2 - 6 1 - 5 front
1-3-5-7 on driver side, 2-4-6-8 on the passenger side
Ford 5.4L Firing Order; 1-3-7-2-6-5-4-8 Cylinder #7 and #8 are; On your right side (Drivers Side) of the engine. # 8 is the last one next to the fire wall and #7 in the one before the last.
Dodge V8 cylinder numbering. Pass side 2-4-6-8 Driver 1-3-5-7
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front