Firing order thanks

[broncomatt]

The 5.0 firing order is the same regardless of the HO designation. Not sure what year they switched to the 5.0, but I think it was 86. Not all the parts are interchangable, not only is the cam diffrent, the cyl heads have larger ports. So the intakes can be tough to swap around. The harmonic dampners are also diffrent. There are several books out there on how to build the older 289-302, and I have seen some on just the 5.0 depending on what your building.
Hope that helps some.
broncomatt