GT-40P Head question.

oo-gonzo · 08-01-2007, 01:41 PM

I found some GT-40 P heads from a 97 Ford Explorer 5.0. I was wondering if $250 for the set was a good price? If purchased, I would like to upgrade the springs and what nots, mabye have'em ported and polished. Would this be worth it? I can't afford to buy a new set of heads right now, so I am going the cheap thrill route. What's your opinion?

BTW, Will be putting them on my 87 GT.

CrazyInBlack · 08-01-2007, 07:08 PM

that price sounds good to me but I have only been looking at 5.0 parts for a while

but I would imagine that everyone is going to tell you that you should do the H/C/I at one time

maybe a GT-40 intake and a letter cam

QWKSNKE · 08-01-2007, 07:34 PM

Are you going to port and polish them yourself? If you are planning on hiring it out it is very expensive especially with cast iron heads.

Just bolt them on and do a cam change and run it

oo-gonzo · 08-02-2007, 10:00 AM

Lee, What about a spring upgrade on them, cause I cannot do the port and polish job. Also, Will these require different headers?

QWKSNKE · 08-02-2007, 10:57 AM

Definitly do a spring upgrade. It is requirement if you stick any aftermarket cam in the motor.

There is a header issue but I cannot remember which ones will work or not work

CrazyInBlack · 08-02-2007, 12:59 PM

I am pretty sure it will require different headers

i think 96 is the only year that did not since they are GT-40s and not Ps

oo-gonzo · 08-02-2007, 01:10 PM

What springs and cam do you recommend?

CrazyInBlack · 08-02-2007, 01:23 PM

I am not the person to ask (if you were asking me)

I would wait for Lee, Brian, or Matt to chime in

it might help to know the plan for the car, street/strip, DD, n2o, ect

slvrbullit · 08-02-2007, 04:25 PM

The header issue is that you have to have "P" specific shorties, but long tubes are no issues.

QWKSNKE · 08-02-2007, 08:09 PM

Quote:

Originally Posted by oo-gonzo

What springs and cam do you recommend?

Trickflow offers an OEM replacement spring that Summit carries for around $120

Cam to go with those heads would probably be FRPP 'b' , 'e', or the TFS stage 1 cam. Anything beyond that would be a waste because those heads stop flowing at .500 lift. Also, any of those cams would work best with 3.73's out back

08-01-2007, 01:41 PM	#1
oo-gonzo Senior Member Join Date: Aug 2006 Location: Gadsden, AL. Posts: 290	GT-40P Head question. I found some GT-40 P heads from a 97 Ford Explorer 5.0. I was wondering if $250 for the set was a good price? If purchased, I would like to upgrade the springs and what nots, mabye have'em ported and polished. Would this be worth it? I can't afford to buy a new set of heads right now, so I am going the cheap thrill route. What's your opinion? BTW, Will be putting them on my 87 GT.

08-01-2007, 07:08 PM	#2
CrazyInBlack Crusin... Join Date: Feb 2005 Location: Various Places in Middle AL Posts: 3,542	that price sounds good to me but I have only been looking at 5.0 parts for a while but I would imagine that everyone is going to tell you that you should do the H/C/I at one time maybe a GT-40 intake and a letter cam __________________ Liberal education has nothing to do with liberal or conservative politics. Liberal education is the simple idea of a broad and well-rounded course of study in the humanities, social sciences, sciences, and the arts. The overarching goal is to liberate the mind from ignorance and superstition.

08-01-2007, 07:34 PM	#3
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Are you going to port and polish them yourself? If you are planning on hiring it out it is very expensive especially with cast iron heads. Just bolt them on and do a cam change and run it __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

08-02-2007, 10:57 AM	#5
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Definitly do a spring upgrade. It is requirement if you stick any aftermarket cam in the motor. There is a header issue but I cannot remember which ones will work or not work __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

08-02-2007, 12:59 PM	#6
CrazyInBlack Crusin... Join Date: Feb 2005 Location: Various Places in Middle AL Posts: 3,542	I am pretty sure it will require different headers i think 96 is the only year that did not since they are GT-40s and not Ps __________________ Liberal education has nothing to do with liberal or conservative politics. Liberal education is the simple idea of a broad and well-rounded course of study in the humanities, social sciences, sciences, and the arts. The overarching goal is to liberate the mind from ignorance and superstition.

08-02-2007, 10:00 AM	#4
oo-gonzo Senior Member Join Date: Aug 2006 Location: Gadsden, AL. Posts: 290	Lee, What about a spring upgrade on them, cause I cannot do the port and polish job. Also, Will these require different headers?

08-02-2007, 01:10 PM	#7
oo-gonzo Senior Member Join Date: Aug 2006 Location: Gadsden, AL. Posts: 290	What springs and cam do you recommend?

08-02-2007, 01:23 PM	#8
CrazyInBlack Crusin... Join Date: Feb 2005 Location: Various Places in Middle AL Posts: 3,542	I am not the person to ask (if you were asking me) I would wait for Lee, Brian, or Matt to chime in it might help to know the plan for the car, street/strip, DD, n2o, ect __________________ Liberal education has nothing to do with liberal or conservative politics. Liberal education is the simple idea of a broad and well-rounded course of study in the humanities, social sciences, sciences, and the arts. The overarching goal is to liberate the mind from ignorance and superstition.

08-02-2007, 04:25 PM	#9
slvrbullit Super Moderator Join Date: Dec 2004 Location: on the water Posts: 1,280	The header issue is that you have to have "P" specific shorties, but long tubes are no issues. __________________ 2012 Jeep Wrangler Unlimited--- too many mods to list, about to be sitting on 1 ton axles. 2000 Ford F-350 Dually Lariat LE Crew Cab Short Box 7.3 auto 168,000 miles