[DAVID GAGNARD]

David,
Just another thing to have to remember I guess. As long as it runs good, that's all that really matters.

One question though, why would they have two different firing orders on a V8? Being that my book shows one for the 351 & 400 but different for the rest.[/quote]

I'm guessing enginering and technology played the part in changing the firing order...also maybe the advent if EFI.....
Personally,I don't see much if any difference in the two, what I look for is a camshaft that has the lift/duration I want and I use that one,regardless of which engine it was designed for..........just be sure to use the firing order for that partciular camshaft.....

David