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post #1 of 5 (permalink) Old 04-20-2011, 09:44 PM Thread Starter
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PI headers

So I used the search and it yielded no results. Are there any options for our cars with PI heads swapped. I am reworking my exhaust and would like a set of kooks but am considering pi heads in the near future.

thanks
-steve
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post #2 of 5 (permalink) Old 04-20-2011, 09:52 PM
TGJ
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Quote:
Originally Posted by slidebird91 View Post
So I used the search and it yielded no results. Are there any options for our cars with PI heads swapped. I am reworking my exhaust and would like a set of kooks but am considering pi heads in the near future.

thanks
-steve
PI and NPI heads have the exact same exhaust port openings...

R.I.P. Johnny Langton (1975 - 2011)

1996 Thunderbird 5.0L 2V-4R70W
12.64 @ 107 MPH -> DA 3315 Ft above Sea level
12.49 @ 109 -> DA 2967 Ft above Sea level
2005 Mustang GT 4.6L 3V-TR3650 - SOLD
13.39 @ 102 MPH -> DA 3617 Ft above Sea level
2011 Mustang GT 5.0L 4V-6R80 - Bolt-ons
12.32 @ 115 MPH -> DA 2980 Ft above Sea level
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post #3 of 5 (permalink) Old 04-20-2011, 09:54 PM Thread Starter
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huh. neat. I thought I read something that said the pi exhaust ports were larger. cool, thanks
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post #4 of 5 (permalink) Old 04-20-2011, 09:58 PM
TGJ
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Intake ports are different between PI and NPI heads and yes the PI ports are bigger on the intake side.

R.I.P. Johnny Langton (1975 - 2011)

1996 Thunderbird 5.0L 2V-4R70W
12.64 @ 107 MPH -> DA 3315 Ft above Sea level
12.49 @ 109 -> DA 2967 Ft above Sea level
2005 Mustang GT 4.6L 3V-TR3650 - SOLD
13.39 @ 102 MPH -> DA 3617 Ft above Sea level
2011 Mustang GT 5.0L 4V-6R80 - Bolt-ons
12.32 @ 115 MPH -> DA 2980 Ft above Sea level
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post #5 of 5 (permalink) Old 04-20-2011, 10:03 PM Thread Starter
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cool, thanks for the help
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