T O P I C R E V I E W
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two-gun kid
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?
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ShiftyGT
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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92stangLX
Member # 3252
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posted
Check out this site. It covers the GT40 vs. GT40p question.
http://www.themustang-net.com/tech_articles/gt40p.shtml
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two-gun kid
Member # 5891
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posted
what headers do i have to use if i get gt40p's? would bbk shorties work?
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two-gun kid
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 ]
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HungryHippo
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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jordan_0806
Member # 5888
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posted
mac and fms...are the only co. that make headers for the gt-40p's....bbk's will not work...
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h8louzn
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!
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two-gun kid
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.
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h8louzn
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.
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two-gun kid
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?
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h8louzn
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
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HaulinAssMaro
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.....
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two-gun kid
Member # 5891
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posted
so i will be able to use my bbk shorties with the gt40p's?
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