GT40P heads, non P headers, and a workaround.

Topic: GT40P heads, non P headers, and a workaround. (Read 2071 times) previous topic - next topic

GT40P heads, non P headers, and a workaround.

February 22, 2012, 02:23:45 AM

#8 plug. Too close.

#8 again. Definitely a no-go with this length of plug.

#5, 6, and 7, they have a fair amount of clearance.

#1,2,3, and 4 are fine

and 2, 3 and 4 again

I googled, and found that Accel has a shorter plug that may work. I'll be taking the head and header to town to test fit before I buy any 15 dollar apiece plugs! :-O

If that's still a no go, I guess I'll just spring for BBK headers, as I can't seem to find the Ford Racing P headers...

GT40P heads, non P headers, and a workaround.

Reply #1 – February 22, 2012, 03:12:51 AM

Here is some great info as well: http://webpages.charter.net/darrell1/mustang_gt40p.html

GT40P heads, non P headers, and a workaround.

Reply #2 – February 22, 2012, 05:55:30 AM

Thunder those short plugs are a joke!!!! They are shorter but like only a 1/4 of an inch at best. Unless they changed them from the last time i tried to use them??? Hope this helps. You are probably going to have to heat that tube and use a piece of plumbers pipe and try folding in a relief on that tube. I always try headers first before installing them so i can tweek them for clearance. If memory serves me and it has been a while that tube can be heated cherry RED and formed with a pipe and a BFH. The pipe does a great job of rounding the tube nicely for plug clearance. This is from memory. Like i said been a long time since i did it. Good luck.

GT40P heads, non P headers, and a workaround.

Reply #3 – February 22, 2012, 06:57:26 AM

The BBK's are great on the Sport. Just used 90 degree plug boots. No issues at all. Sell your headers, use that money to get a decent set of used BBKs. "P" specific headers are a bit costly, but are found easily through Ford racing, Summit, and even show up on the Corral, but even used ones are costly.

GT40P heads, non P headers, and a workaround.

Reply #4 – February 22, 2012, 11:40:38 AM

Vinnie, I've got a coupla leads on some BBK 1515's....I'll probably keep these and use on the Mustang. The HO engine currently in the Sport will go in the Stang when I can find an engine harness for a '90. I'll keep the E7's on that one.

I'll try the shorter plug first, but odds are, I'll probably get the BBK's...

GT40P heads, non P headers, and a workaround.

Reply #5 – February 23, 2012, 12:57:06 AM

I would just get the proper headers. I know they $$$ but they make your life so much easier

GT40P heads, non P headers, and a workaround.

Reply #6 – February 23, 2012, 01:28:53 AM

I am...I ain't f*ckin' around with cobbling shiznit on it, especially when I'll want or need to change the plugs..

GT40P heads, non P headers, and a workaround.

Reply #7 – February 23, 2012, 07:41:18 AM

I went through the same thing... then also got the P headers

GT40P heads, non P headers, and a workaround.

Reply #8 – February 23, 2012, 12:15:38 PM

I'm going to keep the other headers, use them on the HO when it goes into the Stanger...WHEN I find a wiring harness for it, that is..has to be '90, that year only is it's own animal, nothing else will work, unless I want to change out pretty well the whole body harness.
Hell with that, had enough of that with the Sport..lol