• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

GT-40p what headers fit???

  • Thread starter Thread starter KcMstang
  • Start date Start date Apr 2, 2007

KcMstang

Founding Member
Mar 26, 2001
1,563
0
36
Hamilton, Georgia
Apr 2, 2007
#1
  • Apr 2, 2007
  • #1
I was wondering which headers work best with the GT-40p heads? I picked up the heads for $300 already machined and I have Ford Motorsport headers but it doesn't look like I'm going to have much room for the sparkplug wires. Can I make these heads work or is there a better set I need to buy?
 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
6,945
1,598
223
Northern KY
Apr 2, 2007
#2
  • Apr 2, 2007
  • #2
Ford does make a set for P heads, i believe MAC does also. You can also use MAC full lengths with no problem. I can't vouch for any others. The MAC LT's work because of how the full lengths come straight out from the heads more than shorties do....so you *might* be able to use other full lengths as well, but i've never tried so i can't be sure.
 

KcMstang

Founding Member
Mar 26, 2001
1,563
0
36
Hamilton, Georgia
Apr 2, 2007
#3
  • Apr 2, 2007
  • #3
Can I throw in an ecam with stock valve springs on the GT-40p. I believe they came off a '00 Mountaineer. I have some trickflow valve springs I could get put in but not really wanting to spend the money if I don't have to.
 
9

91blackfox

New Member
Mar 31, 2007
0
0
0
Homestead, FL
Apr 2, 2007
#4
  • Apr 2, 2007
  • #4
I have those heads and have heard of others making other headers work but my suggestion is go with the ford motorsports "P" specific headers./...that way you won't have to worry about denting up headers just to get them to fit
I wouldn't use the stock springs with that cam (I have trick flow springs on mine and a steeda #18 cam)....you might get away with it for awhile but eventually it will catch up to you
 

KcMstang

Founding Member
Mar 26, 2001
1,563
0
36
Hamilton, Georgia
Apr 2, 2007
#5
  • Apr 2, 2007
  • #5
Anyone know around about price for getting new valve springs put on heads? Can you ever have too tough of a valve spring for the cam???
 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
6,945
1,598
223
Northern KY
Apr 2, 2007
#6
  • Apr 2, 2007
  • #6
KcMstang said:
Can I throw in an ecam with stock valve springs on the GT-40p. I believe they came off a '00 Mountaineer. I have some trickflow valve springs I could get put in but not really wanting to spend the money if I don't have to.
Click to expand...

We've run both an E and an X cam with P heads but it's always a good idea to check piston to valve clearance.
 
You must log in or register to reply here.

Similar threads

M
Gt40p headers
  • Mike3
  • Oct 14, 2025
  • 1994 - 1995 Specific Tech
Replies
13
Views
740
1994 - 1995 Specific Tech Nov 1, 2025
Blackhawkxx
Fox Xtremely high fuel consumption
  • PonyGTrider
  • Apr 11, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 9 10 11
Replies
213
Views
3K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 9, 2026
PonyGTrider
R
bbk shorty header to mid pipe gasket
  • randyyy
  • Sep 29, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
4
Views
329
1996 - 2004 SN95 Mustang -General/Talk- Sep 29, 2025
randyyy
R
Engine Felpro 9333 pt1 (with 8psi boost)
  • JD1964
  • Jan 14, 2026
  • Fox 5.0 Mustang Tech
Replies
18
Views
692
Fox 5.0 Mustang Tech Feb 1, 2026
Qtrhrse23
Q
S
Fox '87 GT can't get to stay running
  • spilly
  • Mar 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
27
Views
656
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 20, 2026
spilly
S
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?