1-5-4-2-6-3-7-8 Distributor rotates counterclockwise.
Image on the Firing order on a f150 2002?
www.motorcraft.com shows for a 1988 F150 with 5.8 L ( 351 cubic inch V8- W code ) a spark plug firing order ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 ) Distributor rotates COUNTER CLOCKWISE
The spark plug firing order for the 300 cubic inch straight six cylinder ( 4.9 L ) is ( 1 - 5 - 3 - 6 - 2 - 4 ) The spark plug firing order for the 4.2 L V6 engine used in the 1997 F150 is ( 1 - 4 - 2 - 5 - 3 - 6 )
1 - 5 - 3 - 6 - 2 - 4 ( distributor rotates CLOCKWISE )
The 4.9 L ( 300 cubic inch ) straight 6 cylinder firing order is ( 1-5-3-6-2-4 ) The distributor rotor rotates CLOCKWISE
1,3,7,2,6,5,4,8
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5.8 L ( 351 cubic inch - W code ) firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 ) Distributor rotates COUNTER CLOCKWISE
1 3 7 2 6 5 4 8
There is an alternate firing order for a 302 HO engine. Standard Ford 302 firing order is 1-5-4-2-6-3-7-8, HO versionis 1-3-7-2-6-5-4-8
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That would depend on what size of engine that you have