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  How Do you ID Junkyard GT40 heads?

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Author Topic:   How Do you ID Junkyard GT40 heads?

Posts: 45
From: Watkinsville, GA, USA
Registered: Jun 2001

posted 02-01-2003 11:42 AM     Click Here to See the Profile for Rustang351c   Click Here to Email Rustang351c     Edit/Delete Message   Reply w/Quote
Are they on all V8 explorers of a certain year range? What other vehicles might they be on, and that years? Is there a code on the car or motor to give it away?

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Posts: 21725
From: Lyons, IL, USA
Registered: May 99

posted 02-01-2003 12:31 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Exploders have GT-40 "P" heads.
Only Cobra's and Lightnings have GT-40 heads.
Simplest way to identify either is the intake valve size is 1.85 on all of them.

Alex Denysenko
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Posts: 831
From: Kissimee, Fl USA
Registered: Aug 2002

posted 02-01-2003 01:52 PM     Click Here to See the Profile for cobravenom71   Click Here to Email cobravenom71     Edit/Delete Message   Reply w/Quote
What is the difference between the GT-40 'P' heads and the regular GT-40 heads?

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Posts: 295
From: Milwaukee, WI
Registered: Dec 2001

posted 02-01-2003 06:08 PM     Click Here to See the Profile for Bloose   Click Here to Email Bloose     Edit/Delete Message   Reply w/Quote
I think the plug angle is a bit different. Making it nessesary to use special headers. SOmeone correct me if I'm wrong.


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capri man

Posts: 4320
From: doerun, ga.
Registered: Nov 2000

posted 02-01-2003 08:15 PM     Click Here to See the Profile for capri man   Click Here to Email capri man     Edit/Delete Message   Reply w/Quote
the gt40-p heads have 4 slash marks (lines) on the end of the head. they also have gt40-p stamped by the 1st plug hole. they do require special headers because of the plug placement. the flow very similar to the gt40 heads. here is a great article on them.

mike r
racing is real
everything else is just a game.
81 capri-7.51 @89mph 1/8
1.54 60 ft.

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Posts: 542
From: Lakewood, CO, USA
Registered: Jun 2001

posted 02-02-2003 01:19 AM     Click Here to See the Profile for JCQuinn@work   Click Here to Email JCQuinn@work     Edit/Delete Message   Reply w/Quote
The GT40 head was used in the 96 and early 97 Exploders. I have a pair of them that came off an Exploder.

The main difference is the plug placement. -P heads will not accept regular headers.


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