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Author
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Topic: Whats the diffrence between the Gt40p's and the reg. gt40 heads?
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stinger
Gearhead Posts: 272
From: mn
Registered: Feb 2003
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posted 09-19-2003 01:05 PM
   
My brother asked me and I didnt know so I said I would try and find out. I know u can only use like two diffrent headers with the gt40p's, but other then that are there any diffrences like in performance. I am talking about the cast iron heads, not any aluminiums.
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 09-19-2003 01:18 PM
Read this see if it helps.http://www.themustang-net.com/tech_articles/gt40p.shtml LOL sorry I forgot to paste the link. 
------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics [This message has been edited by Fastymz (edited 09-19-2003).]
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capri man
Gearhead Posts: 6417
From: doerun, ga.
Registered: Nov 2000
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posted 09-19-2003 01:52 PM
if that dont help, try this!! http://www.geocities.com/motorcitymustang/gt40p-original.html ------------------
mike r
racing is real
everything else is just a game.
81 capri-7.51 @89mph 1/8
1.54 60 ft. http://www.angelfire.com/ny5/billswebsite/pg06.html
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stinger
Gearhead Posts: 272
From: mn
Registered: Feb 2003
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posted 09-19-2003 02:50 PM
thanks, do either one of u run these heads in your cars?
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 09-19-2003 02:55 PM
No I don't run either head.I've herd the P heads are hard to find headers for a 65 with a 351w in it.------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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capri man
Gearhead Posts: 6417
From: doerun, ga.
Registered: Nov 2000
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posted 09-19-2003 03:16 PM
yes, i have ran them for about 3 years stinger. in my opinion you cant beat them for out of the box bang for the buck.------------------
mike r
racing is real
everything else is just a game.
81 capri-7.51 @89mph 1/8
1.54 60 ft. http://www.angelfire.com/ny5/billswebsite/pg06.html
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stinger
Gearhead Posts: 272
From: mn
Registered: Feb 2003
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posted 09-19-2003 04:59 PM
I sent u a email capri man.
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capri man
Gearhead Posts: 6417
From: doerun, ga.
Registered: Nov 2000
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posted 09-19-2003 05:17 PM
i got it.------------------
mike r
racing is real
everything else is just a game.
81 capri-7.51 @89mph 1/8
1.54 60 ft. http://www.angelfire.com/ny5/billswebsite/pg06.html
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Strain Gang
Gearhead Posts: 212
From: Thor, Iowa
Registered: Mar 2003
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posted 09-19-2003 06:38 PM
Stinger: we run the regular GT-40's on MM#4, stainless valves, cut for studs and guideplates, and roller rockers. We have had GREAT success with them. We have excellent low end torque (until the cam swap). Could use a little more top end, but they work excellent for us. Steve
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