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

PI heads

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Old 02-22-2004, 04:39 PM
  #1  
lpstang
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Default PI heads

if i am running 14.9's before adding 4.10 gears and a PI head swap what should i be running after installing both of them? and then if i added some drag raddials how much more would i go up?
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Old 02-22-2004, 05:06 PM
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Flying5.0
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Default RE: PI heads

Depending on which heads you go with, beeing stage 1 or stage 2, and cam selection, you will gain any where from 50 to 100 horse, wich would be .5 to 1 second increase in E.T.'s. But you will need good tires to get a good time.
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Old 02-22-2004, 05:19 PM
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Razor19
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Default RE: PI heads

How much does a PI head swap cost?
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Old 02-22-2004, 06:28 PM
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mabguru
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Default RE: PI heads

My PI swap in total which im working on right now will be about 2500. Getting the lowerintake and heads ported and polished. Thats with PI intake manifold, PI heads, PI cams, 24lb injectors, gasket/bolt kit, port and polish, and of course the install. I got some good deals on used parts from the stang.net trader. You should check it out.
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Old 02-22-2004, 07:31 PM
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BCisme
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Default RE: PI heads

yea that's about right on for the price. adding a set of aftermarket cams and a valve job will end up running you 3G's to 3500 for everything. i've got all my parts, just need porting and valvejob, but i think i'm going to abandon the project for a cobra.
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