Ford 5.0 firing order

[68Broncoz]

I have a 1992 rebuilt ford roller motor from a Ford Pickup I am installing in my Bronco with a reground Enginetech ES759 Cam shaft.

I am trying to confirm the firing order of 1,3,7,2,6,5,4,8.

Any thoughts would be appreciate,

Chris

 

[Broncobowsher]

Do you have the cam card for the new cam? That will list the correct firing order.
Searching didn't show a specific firing order and listed multiple applications for the cam that I cannot verify the firing order is the same for all applications.

 

[Timmy390]

Found a Stang site saying it's NOT an H.O. cam.......
https://www.corral.net/threads/newly-assembled-stock-motor-sputtering-and-rough-idle.1911409/

Tim

 

[68Broncoz]

Based on the thread it would have the older firing order 1,5,4,2,6,3,7,8?

 

[Timmy390]

Cam card would be the true answer.......The thread seems to indicate "early" firing order......I personally have no idea.... Just passing along what I found. Never heard of that cam before.
Early firing order is 1-5-4-2-6-3-7-8
(HO) firing order is 1-3-7-2-6-5-4-8

Tim

 

[Viperwolf1]

I have a 1992 rebuilt ford roller motor from a Ford Pickup I am installing in my Bronco with a reground Enginetech ES759 Cam shaft.

I am trying to confirm the firing order of 1,3,7,2,6,5,4,8.

Any thoughts would be appreciate,

Chris

Since a 4 stroke V8 fires cylinders at each 90 degree increment of crankshaft rotation it would be quite easy to observe a particular event on cylinder number 1 (like intake valve beginning to open) then watch for that same event on cylinders 3 and 5 after the crankshaft is turned an additional 90 degrees. One of those cylinders will do exactly the same thing and that will get you the first 2 numbers of the firing order.

 

[68Broncoz]

Thanks for the insite. I had some corks in the cylinders holes rotated the engine and they popped 1,5,4. so I should be good to go the esrly firing order.

 

[Broncobowsher]

Corks in the spark plug holes and watch what order they pop out. I like it!

Since the answer is now known, did you know there is a 3rd firing order for a small block ford? 1-8-7-3-6-2-4-5
It is used in the reverse rotation marine engines. I have one in my garage. Just for you trivia buffs.

 

[56f100bbw]

Based on the thread it would have the older firing order 1,5,4,2,6,3,7,8?

My 1990 5.0 the same