GT40 heads vs GTP heads

99TurboV6Stang · September 15th, 2007, 09:08 PM

What heads are better performing heads for a street strip application

Tony_90fox · September 15th, 2007, 10:28 PM

http://www.carbdford.com/tech/headflow.htm

I believe the P's are a tiny bit better, but i doubt you could tell the difference between those two heads...

The main question you have to ask yourself is what headers you are going to be running...The P heads dont accept some headers because of the spark plug angle...But i believe most long tubes will fit them...

I personally like my ported gt40 iron heads.

Rustbelt · September 15th, 2007, 10:48 PM

i went with gt-40p's because i couldnt afford to port them. slightly better flow than stock gt-40s. and they are easy to find. but if you can afford to port them or know how to go with gt-40 and save the hassle of the exhaust issues

1slo5.0 · September 15th, 2007, 11:08 PM

GT40Ps

99TurboV6Stang · September 17th, 2007, 11:20 AM

sweet thanks for the info building another car this time from scratch so i was wondering thanks for all the help.

Tony_90fox · September 17th, 2007, 01:26 PM

From scratch eh? Then why consider gt40p heads? Is this a budget build? What does the rest of the build consist of?

99TurboV6Stang · September 17th, 2007, 06:41 PM

i am going to try and see what kind of power i can make for the cheapest possible price have performer rpm intake .522/.546 lift cam dominater 650
ported heads of some sort hei distributer twin turbo kit

Tony_90fox · September 17th, 2007, 09:47 PM

Originally Posted by 99TurboV6Stang

i am going to try and see what kind of power i can make for the cheapest possible price have performer rpm intake .522/.546 lift cam dominater 650
ported heads of some sort hei distributer twin turbo kit

what kind of block are you going to use?

99TurboV6Stang · September 18th, 2007, 02:47 PM

i have a 351 windsor out of a 1997 f-250 bored .060 and stroked a lol like 370-380

1slo5.0 · September 18th, 2007, 10:34 PM

Originally Posted by 99TurboV6Stang

i have a 351 windsor out of a 1997 f-250 bored .060 and stroked a lol like 370-380

Don't waste your time with GT40 heads on an engine with that many cubic inches. It will be out of breath by 5000 rpm. You need a bigger head.

September 15th, 2007, 09:08 PM	#1
99TurboV6Stang Newbie Join Date: Sep 2007 Location: Marquette, MI Posts: 14 iTrader: 0 reviews	GT40 heads vs GTP heads What heads are better performing heads for a street strip application __________________ 1987 Mustang lx covertable 415hp ford crate motor, subframe connectors, and 4 link 8.8 1999 Mustang V6 black, twin turbos, fuel system, T-56 w/stage 2 clutch, 8.8 locked rear, and all electronics. O ya 13lbs of boost.

September 15th, 2007, 10:28 PM	#2
Tony_90fox Banned Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,831 iTrader: 0 reviews	http://www.carbdford.com/tech/headflow.htm I believe the P's are a tiny bit better, but i doubt you could tell the difference between those two heads... The main question you have to ask yourself is what headers you are going to be running...The P heads dont accept some headers because of the spark plug angle...But i believe most long tubes will fit them... I personally like my ported gt40 iron heads. __________________ [SIGPIC][/SIGPIC] [B][U]MM Sapper Squad[/U][/B] [QUOTE=Regency 2007;1676187]MSO's stupidity has never stopped amazing me since the day he joined this forum.[/QUOTE]

September 15th, 2007, 11:08 PM	#4
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	GT40Ps __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

September 17th, 2007, 11:20 AM	#5
99TurboV6Stang Newbie Join Date: Sep 2007 Location: Marquette, MI Posts: 14 iTrader: 0 reviews	sweet thanks for the info building another car this time from scratch so i was wondering thanks for all the help. __________________ 1987 Mustang lx covertable 415hp ford crate motor, subframe connectors, and 4 link 8.8 1999 Mustang V6 black, twin turbos, fuel system, T-56 w/stage 2 clutch, 8.8 locked rear, and all electronics. O ya 13lbs of boost.

September 17th, 2007, 01:26 PM	#6
Tony_90fox Banned Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,831 iTrader: 0 reviews	From scratch eh? Then why consider gt40p heads? Is this a budget build? What does the rest of the build consist of? __________________ [SIGPIC][/SIGPIC] [B][U]MM Sapper Squad[/U][/B] [QUOTE=Regency 2007;1676187]MSO's stupidity has never stopped amazing me since the day he joined this forum.[/QUOTE]

September 15th, 2007, 10:48 PM	#3
Rustbelt Regular Join Date: Mar 2007 Posts: 245 iTrader: 0 reviews	i went with gt-40p's because i couldnt afford to port them. slightly better flow than stock gt-40s. and they are easy to find. but if you can afford to port them or know how to go with gt-40 and save the hassle of the exhaust issues

September 17th, 2007, 06:41 PM	#7
99TurboV6Stang Newbie Join Date: Sep 2007 Location: Marquette, MI Posts: 14 iTrader: 0 reviews	i am going to try and see what kind of power i can make for the cheapest possible price have performer rpm intake .522/.546 lift cam dominater 650 ported heads of some sort hei distributer twin turbo kit __________________ 1987 Mustang lx covertable 415hp ford crate motor, subframe connectors, and 4 link 8.8 1999 Mustang V6 black, twin turbos, fuel system, T-56 w/stage 2 clutch, 8.8 locked rear, and all electronics. O ya 13lbs of boost.

September 18th, 2007, 02:47 PM	#9
99TurboV6Stang Newbie Join Date: Sep 2007 Location: Marquette, MI Posts: 14 iTrader: 0 reviews	i have a 351 windsor out of a 1997 f-250 bored .060 and stroked a lol like 370-380 __________________ 1987 Mustang lx covertable 415hp ford crate motor, subframe connectors, and 4 link 8.8 1999 Mustang V6 black, twin turbos, fuel system, T-56 w/stage 2 clutch, 8.8 locked rear, and all electronics. O ya 13lbs of boost.

Remove Advertisements Sponsored Links
Forums at Modded Mustangs Advertisement Advertisement

LinkBacks (?) LinkBack to this Thread: http://www.moddedmustangs.com/forums/5-0-mustangs/34786-gt40-heads-vs-gtp-heads.html
Posted By	For	Type	Date
GT40 heads vs GTP heads	This thread	Refback	April 7th, 2011 09:06 AM

Threads Similar to: GT40 heads vs GTP heads
Thread	Thread Starter	Forum	Replies	Last Post
GT40 or 351w heads	B.A.M302	5.0 Mustangs	4	August 20th, 2010 10:41 PM
GT40 Heads	fastford3388	5.0 Mustangs	6	September 29th, 2008 11:44 PM
gt40 heads....	fastford3388	5.0 Mustangs	4	March 9th, 2007 06:49 PM
gt40 heads?	acg	5.0 Mustangs	4	January 25th, 2007 10:14 PM
gt40 p heads	03stanger	5.0 Mustangs	5	January 6th, 2007 01:14 AM

All times are GMT -4. The time now is 06:54 AM.
Contact Us - Modded Mustangs - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.