What stock heads are the best.

K

krallman

New Member

Mar 3, 2006

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Hurricane, WV

Aug 7, 2007

#1

• Aug 7, 2007

• #1

What stock heads are the best on the 5.0 other than the cobra

 

91 HATCH

Banned

May 17, 2007

262

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illinois

Aug 7, 2007

#2

• Aug 7, 2007

• #2

THE GT-40 P HEADS ARE THE BEST

OR USE PORTED E7TE HEADS

 

R

RS200

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Sep 23, 2004

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Winnipeg, Manitoba, Canada

Aug 7, 2007

#3

• Aug 7, 2007

• #3

I thought the GT-40 heads were better than the GT-40P's...

 

foxmustangman

Member

Jun 20, 2007

196

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16

Idaho

Aug 7, 2007

#4

• Aug 7, 2007

• #4

What's the difference between the two?

 

Mr. Rustypwnz

Advanced Member

Jun 1, 2005

1,761

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69

indianapolis/ valdosta ga

Aug 7, 2007

#5

• Aug 7, 2007

• #5

no, the p's flow more, they have a smaller ex. valve, i love mine over the gt40's.

 

25thmustang

Mustang Master

Sep 5, 2003

2,021

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Montgomery, NY

Aug 7, 2007

#6

• Aug 7, 2007

• #6

40Ps would probably be your best bet, or work over some E7s!

 

K

krallman

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Mar 3, 2006

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Hurricane, WV

Aug 7, 2007

#7

• Aug 7, 2007

• #7

gt 40's were aluminum weren't they. And e7's came on everything 87 and up right?

 

91 HATCH

Banned

May 17, 2007

262

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illinois

Aug 7, 2007

#8

• Aug 7, 2007

• #8

only the ford racing gt 40x heads are aluminum

gt 40 p heads can be found on 98-02 5.0 explorers

 

Foxfan88

My Grandpa has great wood.

Sep 13, 2004

2,487

4

0

Miami, Ok

Aug 7, 2007

#9

• Aug 7, 2007

• #9

everything 87 up had e7s from the factory.

93 cobras, lightning pickups, and some explorers for a few years had the regular GT-40s

later year explorers had the gt-40 Ps which are the best factory head.
they have a smaller exhaus valve. but a totally different port design but the P heads flow better than gt-40.

the alum gt40s are different, they are aftermarket and flow better. IIRC the X gt40s arent much more than the regular iron gt40s and the Y gt40s are the better alum gt40s

 

K

krallman

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Mar 3, 2006

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Hurricane, WV

Aug 7, 2007

#10

• Aug 7, 2007

• #10

Thanks guys im going to get the 302 built next year and the class i race in everything has to be stock. So it is going to be the best stock stuff.

 

Roland69

Sergeant Tangnet

Sep 17, 2005

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Port Elgin, Ontario

Aug 8, 2007

#11

• Aug 8, 2007

• #11

I talk to alot of the circle track racers here and they all tell me the GT-40 is a better head than the P's.....maby for them because they run like 7000+ rpm

I was always under the impression that the 40's were better than the p's even before they tell me that.

 

25thmustang

Mustang Master

Sep 5, 2003

2,021

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99

Montgomery, NY

Aug 8, 2007

#12

• Aug 8, 2007

• #12

krallman said:

Thanks guys im going to get the 302 built next year and the class i race in everything has to be stock. So it is going to be the best stock stuff.

Click to expand...

What kind of racing, and what can be done to the heads? This might make your decision harder or easier!

 

88mouse

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Apr 18, 2007

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Mooresville nc

Aug 8, 2007

#13

• Aug 8, 2007

• #13

foxmustangman said:

What's the difference between the two?

Click to expand...

The gt40p's don't have any smog passages in them. I have heard both good and bad about them. To me the p's are better you can port them more.

 

S

superspec

Member

Aug 14, 2006

78

1

6

Aug 8, 2007

#14

• Aug 8, 2007

• #14

ok heres my question. will headers for e7 heads work on gt40p heads?

sometimes i see headers listed for 40p heads.

 

Aliate X

Member

May 9, 2005

602

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18

Rockland NY

Aug 8, 2007

#15

• Aug 8, 2007

• #15

gt40p's use a different header

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,260

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Massachusetts

Aug 8, 2007

#16

• Aug 8, 2007

• #16

Roland69 said:

I talk to alot of the circle track racers here and they all tell me the GT-40 is a better head than the P's.....maby for them because they run like 7000+ rpm

I was always under the impression that the 40's were better than the p's even before they tell me that.

Click to expand...

The P's are a slightly modified version of the plain GT-40. The plug angle was reposition for the spark to show the most, they flow slighly more and the exhaust valve was reduced to help scavenging.

Most modifications tend to improve a design. I beleive they did in this case

 

Foxfan88

My Grandpa has great wood.

Sep 13, 2004

2,487

4

0

Miami, Ok

Aug 8, 2007

#17

• Aug 8, 2007

• #17

Aliate X said:

gt40p's use a different header

Click to expand...

to easily get plugs in and out. but you can use regular headers if you like. my friend used plain old headers with his p heads. he could get the passenger side plugs out fine, but had to remove the header to get the drivers side out.

 

K

krallman

New Member

Mar 3, 2006

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Hurricane, WV

Aug 8, 2007

#18

• Aug 8, 2007

• #18

I can run any head for the 5.0 as long as its factory and not aluminum. I can't port or anything like that which i dont mind cause anything thing will be better than the e5's. But i do have to run the factory header.

 

Roland69

Sergeant Tangnet

Sep 17, 2005

2,867

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Port Elgin, Ontario

Aug 8, 2007

#19

• Aug 8, 2007

• #19

what about heads off a late 80's early 90's 351W EFI....would they be a nice head to get