This is topic How to I.D. GT40P heads? in forum Tech Talk at Northern California Ford Owners  .


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Posted by hidnn.o.s. (Member # 1219) on :
 
Motor is in the car and running, how can I I.D. them from popping the hood?
 
Posted by 1FAST89GT (Member # 5071) on :
 
is it for that drop? it should say gt40p on the outside of the head if i remember also look at the spark plug angle there are different on gt-40p heads then others
 
Posted by crazyhorse (Member # 5662) on :
 
the outside of my heads only say GT. how can i tell which ones they are by the spark plug angle?
 
Posted by 92coupe (Member # 1957) on :
 
you can try feeling the back of the head for the 4 raised lines. 3 if they are regular gt-40's.

Justin
 
Posted by hidnn.o.s. (Member # 1219) on :
 
quote:
Originally posted by 92coupe:
you can try feeling the back of the head for the 4 raised lines. 3 if they are regular gt-40's.
Back of the head? Sal said to look for the 4 bars on the front of the head behind the alternator? All help is appreciated.
 
Posted by JoeT (Member # 298) on :
 
off the top of my head (I'm sure google will correct me)

E7TE casting under valve covers = heh stock 87-95

F77E under valve covers = GT-40P ftw
 
Posted by hidnn.o.s. (Member # 1219) on :
 
Don't have access to removing the valve covers, taht would be too easy.......
 
Posted by blind (Member # 3052) on :
 
quote:
Originally posted by hidnn.o.s.:
quote:
Originally posted by 92coupe:
you can try feeling the back of the head for the 4 raised lines. 3 if they are regular gt-40's.
Back of the head? Sal said to look for the 4 bars on the front of the head behind the alternator? All help is appreciated.
they were on both front and back on mine, and I think the gt40p's have GT stamped on them next to one of the headbolts at one end
 
Posted by 92coupe (Member # 1957) on :
 
quote:
Originally posted by hidnn.o.s.:
quote:
Originally posted by 92coupe:
you can try feeling the back of the head for the 4 raised lines. 3 if they are regular gt-40's.
Back of the head? Sal said to look for the 4 bars on the front of the head behind the alternator? All help is appreciated.
i may be mistaken which side the head they are on but it takes what 2-3 seconds to feel for them. probably the quickest and most definate way to tell what heads they are.

Justin
 
Posted by Luke87GT (Member # 21) on :
 
very simple.

Look for the elevated stripes/bars on the front of the head. If they have 3 bars, they are gt40's. If they have 4 bars, they are gt40p's.

Good Luck
 
Posted by BlueOvalRacing (Member # 1531) on :
 
Even more simple - look for the p next to the pass. side valve cover, or the GTP letters by the front lower head bolt on the same side.

-
 
Posted by HaulinAssMaro (Member # 541) on :
 
quote:
Originally posted by BlueOvalRacing:
Even more simple - look for the p next to the pass. side valve cover, or the GTP letters by the front lower head bolt on the same side.

-
yes but he stated the car is running,with the header,a/c lines,smog lines etc.. in the way you WILL NOT see that csting.

Easiest way is what was mentioned before and that is

4 raised casting lines GT40P
3 raised casting lines GT40

[patriot]
 
Posted by 87 (Member # 1549) on :
 
just look at the spark plug angle, it's almost perpendicular to the head
 
Posted by BlueOvalRacing (Member # 1531) on :
 
You can easily see them in the car with all the accesories. The A/C is on the other side, and the smog pump lines will not get in the way of either marking.
 




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