how to tell pi heads apart

96SCstang

New Member

Jul 22, 2006

228

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0

novi, MI

Mar 30, 2010

#1

• Mar 30, 2010

• #1

i am going to look at/purchase some used pi heads from a dude by me. i was just wondering if there are some markings i could look for to let me know for sure that they are actually pi heads. you never know sometimes with people and i would just like to be sure. anyone have any suggestions on what to look for? thank you

 

M

Midnight2V

Member

Jan 30, 2009

224

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16

Oklahoma

Mar 30, 2010

#2

• Mar 30, 2010

• #2

Square intake ports and a heart shaped chamber. NPI heads have a tear shaped intake port and a circular combustion chamber.

 

96SCstang

New Member

Jul 22, 2006

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novi, MI

Mar 30, 2010

#3

• Mar 30, 2010

• #3

thank you very much....now that you have pointed out those two things it's very obvious. should be easy to tell now.

 

96SCstang

New Member

Jul 22, 2006

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novi, MI

Mar 30, 2010

#4

• Mar 30, 2010

• #4

2003 mercury mountianeer heads should be fine right? they have the heart shaped chambers and all, but all the coolant passages and such will be good also?

 

M

Midnight2V

Member

Jan 30, 2009

224

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Oklahoma

Mar 30, 2010

#5

• Mar 30, 2010

• #5

Yes, other than valve cover bolt patterns everything should be fine. You definitely get a PI style intake manifold and cams as well. The manifold and cams rather than the heads are where the majority of power from a PI swap comes from.

 

96SCstang

New Member

Jul 22, 2006

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novi, MI

Mar 31, 2010

#6

• Mar 31, 2010

• #6

cool....thanks for the help.