5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Head porting question

Old 08-03-2005, 05:09 PM
  #1  
LLADNAR
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Default Head porting question

For anyone who has ever looked in there, in the exhaust ports are little bosses at the tops of the ports that look like they do nothing they have a small hole in the that bottoms out after a 1/4" or so,,the question is can they be removed without any adverse affects. they look pretty useless and a restriction on the exhaust system.
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Old 08-03-2005, 05:14 PM
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wildstang87
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Default RE: Head porting question

they are for the smog pump. you will only see gains if you get rid of them.
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Old 08-03-2005, 10:39 PM
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Quik
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Default RE: Head porting question

heres a link to help you. those are for the thermoactor [sp] get rid of it

http://www.diyporting.com/
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