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Identifying PI heads

  • Thread starter Thread starter Red66GT
  • Start date Start date Aug 13, 2005
R

Red66GT

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Jul 14, 2003
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Simi Valley, CA
Aug 13, 2005
#1
  • Aug 13, 2005
  • #1
Are there any visual differences between PI heads from 99+ mustangs and regular 4.6 liter heads from a 97 mustang? Just wondering if there are ways to tell by looking under the hood.
 

CaliLifeStyle

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Jun 9, 2004
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Oxnard, CA
Aug 13, 2005
#2
  • Aug 13, 2005
  • #2
Red66GT said:
Are there any visual differences between PI heads from 99+ mustangs and regular 4.6 liter heads from a 97 mustang? Just wondering if there are ways to tell by looking under the hood.
Click to expand...

The only way I know of is to look at the intake openings. PI heads have a rectangular opening and the older heads had a teardrop/oval opening. I don't know of another way.
 
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corgan

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#3
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The intake on my 98 was entirely plastic and on my 02 the thermostat housing is metal and the rest is plastic.
 
K

Kilgore Trout

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10 Year Member
Mar 30, 2005
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Aug 13, 2005
#4
  • Aug 13, 2005
  • #4
corgan said:
The intake on my 98 was entirely plastic and on my 02 the thermostat housing is metal and the rest is plastic.
Click to expand...
Heads mang, HEADS...
 

billfisher

Active Member
Jul 17, 2005
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huntsville, AL
Aug 13, 2005
#5
  • Aug 13, 2005
  • #5
intake?

Kilgore Trout said:
Heads mang, HEADS...
Click to expand...

my pi intake is all plastic.

only way to tell is heads, but... I doubt anyone put an NPI intake on PI heads.
the front intake runner on NPI goes to the passenger side of the block. good luck. I had the same questions...but i just figured the lame no power 96 heads were on it because it was well... lame.
 
R

Red66GT

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#6
  • Aug 13, 2005
  • #6
I have the bullitt intake and was told that an 01 bullitt engine was put in my 97, I figured the only way to be sure that the bullitt intake wasn't slapped onto the 97 engine was if I could confirm that the PI heads were on there (even though that wouldn't necessarily guarantee the car has had the bullitt engine swapped, it would be much more likely).
 

billfisher

Active Member
Jul 17, 2005
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huntsville, AL
Aug 14, 2005
#7
  • Aug 14, 2005
  • #7
casting number is at front of passenger side head near exhaust manifold.(i got truck heads) use mirror.
 
S

slow96mustang

New Member
May 20, 2005
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romulus mi
Aug 14, 2005
#8
  • Aug 14, 2005
  • #8
billfisher said:
casting number is at front of passenger side head near exhaust manifold.(i got truck heads) use mirror.
Click to expand...
they say pi right on them with this number
 
W

Waynedavis

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Nov 28, 2020
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Georgia
Nov 28, 2020
#9
  • Nov 28, 2020
  • #9
CaliLifeStyle said:
The only way I know of is to look at the intake openings. PI heads have a rectangular opening and the older heads had a teardrop/oval opening. I don't know of another way.
Click to expand...
 

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Waynedavis

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Nov 28, 2020
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#10
  • Nov 28, 2020
  • #10
Waynedavis said:
Are these pi heads?
Click to expand...
 
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