Is this diagram corrrect showing the firing orders on a 302? Only the 5.0 EFI would be different? Or are there other factors, like a different cam, that could change it? -----------------------------------------------------------------------------------------
that is right. the camshaft determines the firing order. if the cam has been changed then you need to verify the fireing order of the camshaft.
Thanks for the heads up, I checked Edelbrock's website and found this noted for my cam. Firing Order1-5-4-2-6-3-7-8 289-302 c.i.d. Ford V8 Turn distributor clockwise to advance timing. NOTE: 5.0 Litre H.O. engines originally have a different firing order. This must be changed to the firing order listed above when installing Performer RPM camshaft #7122. Good stuff to know.