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Topic: gt40 heads ques...
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two-gun kid2
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Member # 5891
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posted
 
 
what are the differences between the gt40,gt40p and gt40x? i know the gt40 heads were stock for 5.0 cobras,the gt40p from explorer and the gt40x are aluminum? what are the other differences?
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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ShiftyGT
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Member # 3862
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posted
The GT40P flows more than the GT40 but you have to have a specific type of header. The GT40X flows even more... you can look up the #'s of fordmotorsports.com
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1990 GT, Back in action
Posts: 396 | From: Chico CA | Registered: Dec 2003
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two-gun kid2
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Member # 5891
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posted
what headers do i have to use if i get gt40p's? would bbk shorties work?
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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two-gun kid2
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Member # 5891
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posted
are there only certain hearders that will work?
does any obdy know that one website that you can compare all the heads on the market.withe the flow charts
[ August 05, 2005, 02:59 PM: Message edited by: two-gun kid ]
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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Hungry Hippo
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Member # 537
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posted
www.fordmuscle.com has flow charts for all of those. you need specific headers for the gt40p heads, i think mac and fms make them. i've also heard of mac longtubes working
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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h8louzn
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Member # 1075
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posted
Why will the bbk's or others not work?
I have seen bbk's on gt 40P's and they were working fine.
He had to use a wrench to get 2 of the plugs out but alot less money than buying a new pair of headers!
Posts: 593 | From: Sac. | Registered: Mar 2002
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two-gun kid2
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Member # 5891
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posted
yes ive also heard of people using bbk shorties with gt40p's, is there a difference in exhuast port that doesnt match up with other headers.
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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h8louzn
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Member # 1075
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posted
It's just that the spark plugs are in a different location so the header tube is over some of the plugs.
My friend used some 90 degree boots on his plug wires and it worked OK.
Posts: 593 | From: Sac. | Registered: Mar 2002
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two-gun kid2
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Member # 5891
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posted
woulnd the boot hit the header? can you get a picture of you friends heads and headers? which tubes covers the park plug holes?
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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h8louzn
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Member # 1075
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posted
I can't get a picture as he sold the car.
I'm not sure which ones are over the tube.
Sorry
Posts: 593 | From: Sac. | Registered: Mar 2002
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HaulinAss Motorsports
Its a STREETRaceCar!
Member # 541
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posted
quote:
Originally posted by jordan_0806:
mac and fms...are the only co. that make headers for the gt-40p's....bbk's will not work...
I used BBK Shorty Headers with my P heads with no issues.Now I have Mac longtubes.Very minimul issues with sparkplug removal,but ground down a spark plug socket and all issues went away.....
Posts: 22494 | From: Sacramento | Registered: Nov 2001
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two-gun kid2
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Member # 5891
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posted
so i will be able to use my bbk shorties with the gt40p's?
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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