I need help. I have an 87 f150. The crank broke. Had a 302 flat tappet with efi. I ended up putting a 302 roller motor in it. Not sure of the year. It was carburated. I put the intake and efi on the 302 roller.

Question: Do all 302 roller motors have the firing order of 13726548?

Question: Are there some 302 roller motors that aren't HO and have the firing order of 15426378?

Question: If I need to change the firing order of the injectors, what is the best way to do that?

Thanks!