I think the title says it all. What plugs are you using with Pheads?? I was using Autolite 23 when it had E7's on it. Can I use them now??

Nate

 

I had some "p" heads about 7 years ago. I just went to Vatozone and bought some plugs for a 96 explorer 5.0, i dont recall the part # though. Just some autolites will work fine though.

 

GT40 Heads:
AUTOLITE
stock--765 (Heat Range - 5) [14mm, .708 Reach, 5/8" Hex]
1 step colder--764 (4) or 104 (4) [14mm, .708 Reach, 5/8" Hex]**
2 step colder--103 (3) [14mm, .708 Reach, 5/8" Hex]**
-----AR473 (3) [*recessed tip, racing plug]
-----AR472 (2) [*recessed tip, racing plug]

**The difference between the 764 plug and the 104/103 plug is the thread. The 764 plug is a half thread whereas the 104/103 plug is a full thread. The full thread plugs are duplicates of the half thread plugs in every other aspect, they both protrude the same amount into the combustion chamber.

 

i ran plugs out of an 98 exploder when i had mine.

 

Were you guys running yours with boost? I'd like to think at least 1 heat range cooler would be needed...

Thanks rdub79!!

Nate

 

I haven'y got mine up and running yet with new turbo setup, but last summer I had the same motor with a 150hp wet shot and used the 103's. The car ran just as good with the cold plugs as it did with the stockers.