GT 500 Heads

powersrj · April 8th, 2008, 06:30 PM

Are the GT 500 Heads the same as the 03/04 cobra heads or are they bigger? Anyone know? If so can they be put on 4.6 liter blocks?

Doc8224 · April 8th, 2008, 06:38 PM

They are basicly FR500 heads like where used on the 2000 Cobra R. The exhaust bolt pattern on the head is different on the shelby head than other 4v heads so header selection will be kinda tough. Probably just run shelby headers but I am not positive about fitment. Also the intake ports on the shelby head are raised, so you will have to run a custom manifold or get some adaptor plates to make your stock one work. Thats basicly the jist of it.

powersrj · April 8th, 2008, 06:40 PM

Are they worth the trouble you think?

BWAL · April 8th, 2008, 06:42 PM

powersrj, you could always port and polish your stock heads. that'd probably be your best bet.

Doc8224 · April 8th, 2008, 06:50 PM

Originally Posted by powersrj

Are they worth the trouble you think?

Not on a 4v car thats a 99 or newer.

Originally Posted by BWAL09

powersrj, you could always port and polish your stock heads. that'd probably be your best bet.

+50000 If you have a 99+ cobra or a Mach then thats your best bet. It will be easier and cheaper. The 03-04 Mach/Cobra heads aren't very much below the fr500 heads. Having said that if you wanna change heads thats the heads to shoot for. They are cheaper, easier to get, and are a direct bolt on for a 4.6 4v.

powersrj · April 8th, 2008, 07:19 PM

Ok sounds good.

shadow5403 · April 9th, 2008, 10:02 AM

how big of a difference is there between the Ford GT heads, and the 03/04 heads?

RandoGT · April 9th, 2008, 03:06 PM

wouldn't the Ford GT heads be a 2V heads?

shadow5403 · April 9th, 2008, 03:51 PM

Originally Posted by RandoGT

wouldn't the Ford GT heads be a 2V heads?

No, the Ford GT as in the supercar....not the mustang GT.

Doc8224 · April 9th, 2008, 06:08 PM

Originally Posted by shadow5403

how big of a difference is there between the Ford GT heads, and the 03/04 heads?

Ford gt heads are almost identical to the gt500 head.

Rosco P · April 10th, 2008, 08:54 AM

The Ford GT head is the GT500 head.

The cam, blower, and block are the main differences.

shadow5403 · April 11th, 2008, 08:17 AM

^^^ wouldnt it be that the GT500 head is the Ford GT head since it came out first?

Rosco P · April 11th, 2008, 09:39 AM

Okay

You got me.

April 8th, 2008, 06:30 PM	#1
powersrj Regular Join Date: Feb 2007 Posts: 375 iTrader: 0 reviews	GT 500 Heads Are the GT 500 Heads the same as the 03/04 cobra heads or are they bigger? Anyone know? If so can they be put on 4.6 liter blocks?

April 8th, 2008, 06:38 PM	#2
Doc8224 N/A 4v Guru 2003 Mach 1 Join Date: Oct 2007 Location: Afghanistan Posts: 3,463 Blog Entries: 2 iTrader: 1 reviews	They are basicly FR500 heads like where used on the 2000 Cobra R. The exhaust bolt pattern on the head is different on the shelby head than other 4v heads so header selection will be kinda tough. Probably just run shelby headers but I am not positive about fitment. Also the intake ports on the shelby head are raised, so you will have to run a custom manifold or get some adaptor plates to make your stock one work. Thats basicly the jist of it. __________________ Military Crew U.S. Army Aviation Apache's Lead The Way

April 8th, 2008, 06:42 PM	#4
BWAL MSTRB8N & MDR8N 2021 Mustang V15 Quad Turbo with nawz Join Date: Nov 2006 Location: On The Shaft Posts: 19,657 Blog Entries: 2 iTrader: 4 reviews	powersrj, you could always port and polish your stock heads. that'd probably be your best bet. __________________ MM 1 am boner crew Cars and mod list in garage i like veiny meat sliding between my buttcheeks

April 9th, 2008, 10:02 AM	#7
shadow5403 Hardcore Enthusiast Join Date: Oct 2007 Location: PA Posts: 2,037 iTrader: 0 reviews	how big of a difference is there between the Ford GT heads, and the 03/04 heads? __________________

April 11th, 2008, 08:17 AM	#12
shadow5403 Hardcore Enthusiast Join Date: Oct 2007 Location: PA Posts: 2,037 iTrader: 0 reviews	^^^ wouldnt it be that the GT500 head is the Ford GT head since it came out first? __________________

April 8th, 2008, 06:40 PM	#3
powersrj Regular Join Date: Feb 2007 Posts: 375 iTrader: 0 reviews	Are they worth the trouble you think?

April 8th, 2008, 07:19 PM	#6
powersrj Regular Join Date: Feb 2007 Posts: 375 iTrader: 0 reviews	Ok sounds good.

April 9th, 2008, 03:06 PM	#8
RandoGT Enthusiast 1998 Mustang GT Need to hit the track Join Date: May 2007 Location: Katy, TX Posts: 856 iTrader: 0 reviews	wouldn't the Ford GT heads be a 2V heads?

April 10th, 2008, 08:54 AM	#11
Rosco P Newbie 2007 GT500 Join Date: Apr 2008 Location: Raleigh NC Posts: 13 iTrader: 0 reviews	The Ford GT head is the GT500 head. The cam, blower, and block are the main differences.

April 11th, 2008, 09:39 AM	#13
Rosco P Newbie 2007 GT500 Join Date: Apr 2008 Location: Raleigh NC Posts: 13 iTrader: 0 reviews	Okay You got me.

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