4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

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Old 04-11-2007, 04:30 AM
  #1  
benk87
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When doing a PI swap... Do you have to replace the HEADs? Or is it ok just to replace the intake???
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Old 04-11-2007, 04:47 AM
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geetee03
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Default RE: Pi

if your doing it right you need the heads & cams.
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Old 04-11-2007, 04:51 AM
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Tylus
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Default RE: Pi

what good is the swap if you only do the intake? the heads are the real power gainer for you in the PI swap.
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Old 04-11-2007, 08:51 AM
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lizzyfan
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Default RE: Pi

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what good is the swap if you only do the intake? the heads are the real power gainer for you in the PI swap.
Actually it's the intake that has the most gains
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Old 04-11-2007, 08:52 AM
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lizzyfan
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Default RE: Pi

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When doing a PI swap... Do you have to replace the HEADs? Or is it ok just to replace the intake???
Do both
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Old 04-11-2007, 09:47 AM
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Hash06
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ORIGINAL: Tylus

what good is the swap if you only do the intake? the heads are the real power gainer for you in the PI swap.
no not really, the heads are the least restrictive part. it is the cams and intake, but mainly the intake
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Old 04-11-2007, 10:11 AM
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97tplsGT
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Default RE: Pi

you dont HAVE to do the heads, but if its financially feasible, might as well do the whole swap at the same time
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Old 04-11-2007, 10:15 AM
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96GT226410
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Default RE: Pi

If I ever get another NPI GT, I'm not doing a PI swap. Just look for a whole engine. It's so much easier.
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Old 04-11-2007, 10:28 AM
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97tplsGT
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If I ever get another NPI GT, I'm not doing a PI swap. Just look for a whole engine. It's so much easier.
i hear ya, but if i went that route, my baby would still be sitting under a car cover, waiting forever, i had to fix my intake, went ahead and went the pi route....
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Old 04-11-2007, 02:34 PM
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TX97GT
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Default RE: Pi

are the costs similar to go ahead and do an engine swap? and whats a ballpark figure for a pi engine??
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