I need the firing order for a 1987 F150 5.0L engine. I think it is either 15426378 or 13726548.

 

Firing order 1-5-4-2-6-3-7-8 ---------- front | 1 2 3 4 | of | | distributor rotates counter vehicle | 5 6 7 8 | clockwise ---------- [IMG]file:///C:/DOCUME%7E1/victoria/LOCALS%7E1/Temp/moz-screenshot.png[/IMG]