GT40 / GT40p Questions

91cobra5.0 · April 11th, 2008, 11:42 PM

im going to the junkyard tomarrow morning, i just have a few qyestions.

what are the the years for these heads? 97 explorers and up?

do they have the same header pattern as stock mustang pattern?

what are the markings fir gt-40's?

is there any way that i can tell if they are still good?

neverfastenough1 · April 12th, 2008, 01:51 AM

Not sure about the years for the Exploders. The GT40's are iron and have 3 lines on the front of them. The GT40p's are aluminum I believe, and have a gtp stamped on it. The GT40p's supposedly need "p" specific headers, but I have heard of people getting around that with shorties. I think I remember a thread once where a guy cut down a sparkplug socket and used a wrench to turn it so he didn't have to take off the header to change the plug. he used the end off a coil wire because the plug boot wouldn't fit under the header on the #3 plug. Neither are anywhere near as good as aftermarket heads, but I guess they are cheaper.

STREET6 · April 12th, 2008, 01:57 AM

the p heads have 4 bars on the front and are labled gt-40p I belive or gtp. Either are decent stock heads. BOTH are Iron. ps are on 97 or 98 and newer explorers. I'd try offering a few bucks less than what they want, many places will do that if you are pulling them yourself. The closest yard to me pulls all the newer engines so I couldn't find any to pull myself. Good luck.

STREET6 · April 12th, 2008, 02:01 AM

oh, I forgot, if there is an intake still on one grab that too. I belive it's the same as a cobra intake and will help performance for a lot less than buying one new.
Actualy, if you are thinking of rebuilding your bottom end you could always pick up the whole explorer engine and just rebuild that and do a quick swap when it's done.

91cobra5.0 · April 12th, 2008, 09:24 AM

ok guys thanx, ill be taking off here in about 30 mins.

nasty92LX · April 12th, 2008, 12:30 PM

take off the valve cover and it will say gt40p stamped on the head and they are not aluminum. Gt40 head came on 96 and early 97 explorers with 5.0's and late 97 to 01 have the p's. I have a set of p's on my car now and love them. I have a auto car and its been 13.06 on junk street tires so far. they work good.

91cobra5.0 · April 12th, 2008, 02:55 PM

didnt freakin find any

91cobra5.0 · April 12th, 2008, 02:59 PM

are there casting numbers for the p's?

nasty92LX · April 12th, 2008, 03:00 PM

just take off the valve cover and it will say gt40p

KEDuffy · April 13th, 2008, 02:42 PM

it's about a b*tch to find them around here at the junkyards too... good luck with your search

e3sean · April 13th, 2008, 02:47 PM

yeah they are few and far between you can look on craigslist for a set if u look on the lip where the exhaust port side next to one of the head bolts it will say GTP to u dont have to take anything off when your looking

91cobra5.0 · April 13th, 2008, 02:48 PM

i just wish there was more than 1 junk yard out here

e3sean · April 13th, 2008, 02:55 PM

i went out and took pics just for you

MustangMally97 · April 13th, 2008, 05:19 PM

Originally Posted by 91cobra5.0

i just wish there was more than 1 junk yard out here

What Junk yard did you go to? A1? I know of a few more. Have you looked on Craigslist...? I believe there is a ad on craigslist right now.

nasty92LX · April 13th, 2008, 06:34 PM

i work at a junk yard in philly. I can look and see if there are a set still left on the explorer i have. it is 60 a head. If you want them just let me know

91cobra5.0 · April 13th, 2008, 07:57 PM

Originally Posted by MustangMally97

What Junk yard did you go to? A1? I know of a few more. Have you looked on Craigslist...? I believe there is a ad on craigslist right now.

yea were at? tell me tell me tell me

MustangMally97 · April 13th, 2008, 08:08 PM

Did you go to A1? There is a few junk yards out east off of Hwy 94. BUT, I bet you wont find what you are looking for. I know of a pull and save up in Denver. Not sure of the name. It might even be Pull in Save.

It's Gt40 heads you are looking for right???? Here is a link to some GT40 heads on Craigslist for sale... Mustang parts

91cobra5.0 · April 13th, 2008, 09:08 PM

only prolem is that they want so much damn money and i dont have that much right now, freakin if i can find some in a pick and pull junk yard i should be able to get them less than 75 bucks

MustangMally97 · April 14th, 2008, 01:39 AM

Yeah, no doubt. Yeah, google pick and pulls in Denver. If You don't come up with anything I'll make a call for ya to a friend that lives up there and find out exactly what the name and where it is.

91cobra5.0 · April 14th, 2008, 07:41 AM

awsome thanks

April 11th, 2008, 11:42 PM	#1
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	GT40 / GT40p Questions im going to the junkyard tomarrow morning, i just have a few qyestions. what are the the years for these heads? 97 explorers and up? do they have the same header pattern as stock mustang pattern? what are the markings fir gt-40's? is there any way that i can tell if they are still good?

April 12th, 2008, 01:51 AM	#2
neverfastenough1 Hardcore Enthusiast 2002 Mustang GT Join Date: May 2007 Location: Savannah, Ga Posts: 2,789 iTrader: 3 reviews	Not sure about the years for the Exploders. The GT40's are iron and have 3 lines on the front of them. The GT40p's are aluminum I believe, and have a gtp stamped on it. The GT40p's supposedly need "p" specific headers, but I have heard of people getting around that with shorties. I think I remember a thread once where a guy cut down a sparkplug socket and used a wrench to turn it so he didn't have to take off the header to change the plug. he used the end off a coil wire because the plug boot wouldn't fit under the header on the #3 plug. Neither are anywhere near as good as aftermarket heads, but I guess they are cheaper. __________________

April 12th, 2008, 02:01 AM	#4
STREET6 Regular 1995 Mustang Coupe 3.8l Join Date: Dec 2007 Location: Keizer, Oregon Posts: 146 iTrader: 0 reviews	oh, I forgot, if there is an intake still on one grab that too. I belive it's the same as a cobra intake and will help performance for a lot less than buying one new. Actualy, if you are thinking of rebuilding your bottom end you could always pick up the whole explorer engine and just rebuild that and do a quick swap when it's done. __________________ 1995 Mustang Coupe. 3.8l Auto. Bought for $800 and it shows. Swapping in 5.0l carbed. T5 Tranny. Goal 325HP.

April 13th, 2008, 02:47 PM	#11
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	yeah they are few and far between you can look on craigslist for a set if u look on the lip where the exhaust port side next to one of the head bolts it will say GTP to u dont have to take anything off when your looking __________________

April 13th, 2008, 02:55 PM	#13
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	i went out and took pics just for you __________________

April 12th, 2008, 01:57 AM	#3
STREET6 Regular 1995 Mustang Coupe 3.8l Join Date: Dec 2007 Location: Keizer, Oregon Posts: 146 iTrader: 0 reviews	the p heads have 4 bars on the front and are labled gt-40p I belive or gtp. Either are decent stock heads. BOTH are Iron. ps are on 97 or 98 and newer explorers. I'd try offering a few bucks less than what they want, many places will do that if you are pulling them yourself. The closest yard to me pulls all the newer engines so I couldn't find any to pull myself. Good luck. __________________ 1995 Mustang Coupe. 3.8l Auto. Bought for $800 and it shows. Swapping in 5.0l carbed. T5 Tranny. Goal 325HP.

April 12th, 2008, 09:24 AM	#5
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	ok guys thanx, ill be taking off here in about 30 mins.

April 12th, 2008, 12:30 PM	#6
nasty92LX Regular Join Date: Mar 2007 Posts: 184 iTrader: 0 reviews	take off the valve cover and it will say gt40p stamped on the head and they are not aluminum. Gt40 head came on 96 and early 97 explorers with 5.0's and late 97 to 01 have the p's. I have a set of p's on my car now and love them. I have a auto car and its been 13.06 on junk street tires so far. they work good.

April 12th, 2008, 02:55 PM	#7
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	didnt freakin find any

April 12th, 2008, 02:59 PM	#8
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	are there casting numbers for the p's?

April 12th, 2008, 03:00 PM	#9
nasty92LX Regular Join Date: Mar 2007 Posts: 184 iTrader: 0 reviews	just take off the valve cover and it will say gt40p

April 13th, 2008, 02:42 PM	#10
KEDuffy Newbie Join Date: Nov 2006 Posts: 13 iTrader: 0 reviews	it's about a b*tch to find them around here at the junkyards too... good luck with your search

April 13th, 2008, 02:48 PM	#12
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	i just wish there was more than 1 junk yard out here

April 13th, 2008, 06:34 PM	#15
nasty92LX Regular Join Date: Mar 2007 Posts: 184 iTrader: 0 reviews	i work at a junk yard in philly. I can look and see if there are a set still left on the explorer i have. it is 60 a head. If you want them just let me know

April 13th, 2008, 08:08 PM	#17
MustangMally97 Regular 1997 GT 14.7@92mph Join Date: Apr 2008 Location: Colorado Springs Posts: 367 iTrader: 0 reviews	Did you go to A1? There is a few junk yards out east off of Hwy 94. BUT, I bet you wont find what you are looking for. I know of a pull and save up in Denver. Not sure of the name. It might even be Pull in Save. It's Gt40 heads you are looking for right???? Here is a link to some GT40 heads on Craigslist for sale... Mustang parts __________________ 97 GT w/ 2002 PI 4.6, 373 gears, UPR O/R X, Borla exhaust, steeda short throw-SOLD

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April 13th, 2008, 09:08 PM	#18
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	only prolem is that they want so much damn money and i dont have that much right now, freakin if i can find some in a pick and pull junk yard i should be able to get them less than 75 bucks

April 14th, 2008, 01:39 AM	#19
MustangMally97 Regular 1997 GT 14.7@92mph Join Date: Apr 2008 Location: Colorado Springs Posts: 367 iTrader: 0 reviews	Yeah, no doubt. Yeah, google pick and pulls in Denver. If You don't come up with anything I'll make a call for ya to a friend that lives up there and find out exactly what the name and where it is. __________________ 97 GT w/ 2002 PI 4.6, 373 gears, UPR O/R X, Borla exhaust, steeda short throw-SOLD

April 14th, 2008, 07:41 AM	#20
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	awsome thanks

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