'82 CHP Mustang 5.0 HO firing order

[Wolfe1013]

Thanks, guys. The thing with Chilton and Haynes, they show both HO and non-HO for the 1982 5.0L motor. I don't have that '82 shop manual, will have to look for it. I have one for the 351W HO Vic I've got, so I know their value.

With the engine work that's been done to my car, would it not run rough if it were wired incorrectly? I've driven it several times. I'm going to be changing out the battery cables and need to get the new belt on, so I haven't cranked it yet after the tune-up. I know it works with the non-HO firing order, so with no replies while I was under the hood, I wired it back up that way. Haven't got a chance to touch it since.

I guess my question is this: what reason would there be to have wired the motor up with the non-HO firing order. What would have been changed in the motor to require that, or is it just an oversight or confusion?

Thanks.