Question on GT40 vs GT40P heads

93hatch · July 19th, 2008, 07:15 PM

Originally Posted by b-on-b 5.0

can you email me some pictures of them? my e mail is flyfisher120@aol.com and wat else do i need so i can bolt those up to my stock 5.0

youll just need all new gaskets, and you should put some new head bolts too

1sl0w88 · July 19th, 2008, 10:02 PM

All this talk about Explorer Heads and Intakes. What years should I be looking for?

1slo5.0 · July 19th, 2008, 10:31 PM

Originally Posted by ponylvr2

All this talk about Explorer Heads and Intakes. What years should I be looking for?

96-01 for the intake and 96-early 97 for GT40 heads and mid 97 to 01 for the GT40P heads.

FYI, I know for a fact you can go 12.8s with GT40P heads, Explorer intake, 3.55 gears and 26x8.5 slicks with no other modifications......even a stock shifter.

Here is a video

MySpaceTV Videos: Winter beater Mustang LX by O'Darrell Rules!

1sl0w88 · July 19th, 2008, 11:04 PM

Thanks Darrell. I've been searching the threads for that answer but havent come across it yet.

redmaster · July 20th, 2008, 03:17 AM

ican take some when ineed

JBIGBOOTSY · July 20th, 2008, 10:14 AM

P's have smaller chambers too.

50fanatic · July 20th, 2008, 11:24 AM

How much can I get explorer GT40 heads for, from the junkyard? What modifications, besides the headers will I need to make? I already have an ford explorer 65mm throttle body.

JBIGBOOTSY · July 20th, 2008, 11:53 AM

prolly 150-300 a set. No mods needed. Id do a valvejob, and springs for sure tho.

1slo5.0 · July 20th, 2008, 12:48 PM

Originally Posted by JBIGBOOTSY

prolly 150-300 a set. No mods needed. Id do a valvejob, and springs for sure tho.

+1

KansasCityGT · July 20th, 2008, 02:36 PM

Originally Posted by JBIGBOOTSY

prolly 150-300 a set. No mods needed. Id do a valvejob, and springs for sure tho.

Stock rockers on GT40 or GT40P heads are a 1.7. You can find some heads already reworked and gone through for around 400-475

50fanatic · July 20th, 2008, 04:56 PM

I'm planning to also install 1.7 roller rockers on my stock 5.0. For now, my next modification will be the PA street/strip valvebody to quicken the shifts and then the 373 gears.

1slo5.0 · July 20th, 2008, 05:05 PM

Originally Posted by KansasCityGT

Stock rockers on GT40 or GT40P heads are a 1.7. You can find some heads already reworked and gone through for around 400-475

Stock rockers on Explorers are 1.6. The Cobras had 1.7.

KansasCityGT · July 20th, 2008, 05:06 PM

Originally Posted by Darrell

Stock rockers on Explorers are 1.6. The Cobras had 1.7.

even on the GT40 version that came on the 96 early 97 Explorers?

1slo5.0 · July 20th, 2008, 05:10 PM

Originally Posted by KansasCityGT

even on the GT40 version that came on the 96 early 97 Explorers?

Yes. The Cobras came with 1.7 roller rockers.

KansasCityGT · July 20th, 2008, 05:12 PM

Originally Posted by Darrell

Yes. The Cobras came with 1.7 roller rockers.

ahh, learned something new. Thank you very much

July 19th, 2008, 10:02 PM	#22
1sl0w88 Regular 88 LX 5.0 Convertable Join Date: Jun 2008 Location: South Carolina Posts: 482 iTrader: 0 reviews	All this talk about Explorer Heads and Intakes. What years should I be looking for? __________________ Robbie _________________ 88 LX Convertible 5.0 84 GT - Project 66 F100

July 19th, 2008, 11:04 PM	#24
1sl0w88 Regular 88 LX 5.0 Convertable Join Date: Jun 2008 Location: South Carolina Posts: 482 iTrader: 0 reviews	Thanks Darrell. I've been searching the threads for that answer but havent come across it yet. __________________ Robbie _________________ 88 LX Convertible 5.0 84 GT - Project 66 F100

July 20th, 2008, 11:24 AM	#27
50fanatic Regular 1993 mustang GT Join Date: May 2008 Location: Florida Posts: 78 iTrader: 0 reviews	How much can I get explorer GT40 heads for, from the junkyard? What modifications, besides the headers will I need to make? I already have an ford explorer 65mm throttle body. __________________

July 20th, 2008, 04:56 PM	#31
50fanatic Regular 1993 mustang GT Join Date: May 2008 Location: Florida Posts: 78 iTrader: 0 reviews	I'm planning to also install 1.7 roller rockers on my stock 5.0. For now, my next modification will be the PA street/strip valvebody to quicken the shifts and then the 373 gears. __________________

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July 20th, 2008, 03:17 AM	#25
redmaster Newbie Join Date: Jun 2007 Posts: 9 iTrader: 0 reviews	ican take some when ineed

July 20th, 2008, 10:14 AM	#26
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	P's have smaller chambers too.

July 20th, 2008, 11:53 AM	#28
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	prolly 150-300 a set. No mods needed. Id do a valvejob, and springs for sure tho.

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