I know this is a basic question but I'm confused.
I got my T-Bird running after it sat for years. It's running ruff so I thought I would check the timing. But First I checked the plugs for Firing Order.
The Shop manual I have for the Bird says - 1 5 4 2 6 3 7 8.
What I found was it is wired 1 5 4 3 7 2 6 8.

Wrong Book? Wrong Engine?

HELP

Ed