What's the proper spark plug gap 1998 Cobra

[dobravery]

1998 Cobra: What's the proper spark plug gap? Does the gap change if the car has an ATI/Procharger supercharger with 10-12pnds of boost?
Thanks.

[351wStang]

Originally Posted by dobravery

Does the gap change if the car has an ATI/Procharger supercharger with 10-12pnds of boost?
Thanks.

Yes. Not sure what the stock gap is, probably around .040. With 10-12psi I would suggest a gap around .030. Also you need to run a colder plug. Autolite 23's with a gap of about .030 was suggestd to me.