What is a good plug #
 

I am new to this site, but it appears that there are alot of knowledgeable people here....I have a 5.0 with the GT-40 Heads , Headers, The Ford "F" cam, 70mm throtle body, What is a good plug ( make and part # ) to use for the street ?

Re: What is a good plug #
 

Autolite 3924

.45

Re: What is a good plug #
 

Thank You Frank....
are there any platinum or irridium plugs that are known to make an improvement that you know of ?

Re: What is a good plug #
 

Use the plain plugs. The only thing that will help a plugs performance is a larger or multiple path to fire on, IE split fires. Or a larger ignition box.

The different material plugs are made to last and not for performance.

If your ever at a drag race ask the big boys what their running. Most likely the plain ole' Autolites or equivlent.

Re: What is a good plug #
 

Hello Frank,
That does make alot of sense........I've just seen so many ads for platinum and irriium, I thought I would ask people in the know.
Thanks,
George