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Old November 11th, 2007, 10:23 PM   #1
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GT 40 P Headers


i have the oppurtunity to get mint highly ported gt-40p heads for my 5.0

where can i buy headers for them? how much of a power increase should i expect?
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Old November 11th, 2007, 10:24 PM   #2
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Ford racing parts makes them but they are extremly pricey
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Old November 12th, 2007, 12:00 AM   #3
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BBK un equal shorties work. you just need sleeves for plug boots, and changing plugs requires patience.
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Old November 12th, 2007, 12:19 AM   #4
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Stock headers work. MAC makes GT40P specific headers, BBK full length headers fit, Hedman full length headers fit, BBK equal length shorties fit and I'm sure there are others out there that fit too.
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Old November 12th, 2007, 12:26 AM   #5
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Go with longtubes!
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Old November 12th, 2007, 12:56 AM   #6
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Originally Posted by Tony_90fox View Post
Go with longtubes!

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Old November 12th, 2007, 01:29 AM   #7
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but will my bbk long tubes work?

300 fucking dollars... i hope mine work..

sorry but again how much increase of horsepower/torque should i get? is it worth it? darrel question.. should i just port the stock e7te heads? ahhhh
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Old November 12th, 2007, 01:35 AM   #8
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Get the GT40p heads...I have ported Gt40, ported explorer intake, and B303 cam...Big difference from stock...But i have not had it dynoed...Porting the E7s really wont pick up alot, even though there are rare cases of PROFESSIONALS doing great work with them, they are still E7 heads and can only flow so much.

Nobody will be able to tell you what it will dyno dude...You used the word "highly"...who knows what constitutes "highly"? But i guarentee you will see a nice pickup in HP/TQ and 1/4 mile times.
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Old November 12th, 2007, 12:04 PM   #9
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thanks a lot bump anyone knows if my headers will work?
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Old November 12th, 2007, 12:24 PM   #10
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the highest "claimed" flow numbers I've seen for ported p heads is mid 200 cfm range If they are indeed ported well an estimate of 220 cfm would be what I say. 220 cfm with supporting mods is enough to break into the low to mid 300 RWHP area.
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Old November 12th, 2007, 02:37 PM   #11
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Originally Posted by 1BADSTANG View Post
should i just port the stock e7te heads? ahhhh

No. Also, $300 is dirt cheap for headers and yes your BBK full length headers should work.
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Old November 12th, 2007, 02:39 PM   #12
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have you seen the headers yet, how do you actually know there "HEAVILY PORTED"...
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Old November 12th, 2007, 02:41 PM   #13
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Originally Posted by Speedstang302 View Post
have you seen the headers yet, how do you actually know there "HEAVILY PORTED"...
you mean "heads" right?
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Old November 12th, 2007, 02:47 PM   #14
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Originally Posted by Tony_90fox View Post
you mean "heads" right?
yes...idk i think i saw the title say headers and accidentally wrote that...porting headers...that'd be a good one..
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