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Old 03-02-2006, 07:58 PM   #1
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2004 mustang v6 3.9l

Whats the diffrence between the 2004 mustang with the 3.9l engine and the 1999-2004 mustang with the 3.8l engine
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Old 03-02-2006, 08:13 PM   #2
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Re: 2004 mustang v6 3.9l

Oh God... here it comes... The debate to end all others.
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Old 03-02-2006, 09:09 PM   #3
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Re: 2004 mustang v6 3.9l

nothing really, the crank is a tad different, the power, the tq, the everything is the same, just using up spare parts probably.
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Old 03-02-2006, 09:15 PM   #4
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Re: 2004 mustang v6 3.9l

They transplanted a few parts from the windstar line that were leftover after changing the windstar with whatever the new minivan is.
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Old 03-02-2006, 09:53 PM   #5
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Re: 2004 mustang v6 3.9l

Quote:
Originally Posted by Danstang8
Whats the diffrence between the 2004 mustang with the 3.9l engine and the 1999-2004 mustang with the 3.8l engine



everything........................


welcome to the club buddy...................the 3.9 club
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Old 03-03-2006, 10:14 AM   #6
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Re: 2004 mustang v6 3.9l

dont listen to a word he says ^^ they are identical for all intends and purposes.
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Old 03-03-2006, 11:40 AM   #7
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Re: 2004 mustang v6 3.9l

Listen to SpectorV !!! I have a 04 3.9 & there is no differance Ford just wanted to use up some windstar parts
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Old 03-03-2006, 07:12 PM   #8
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Re: 2004 mustang v6 3.9l

nah uh
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Old 03-03-2006, 10:41 PM   #9
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Re: 2004 mustang v6 3.9l

i have a 3.8, my sister has a 3.9...there is no difference in power, trust me
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Old 03-05-2006, 12:34 PM   #10
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Re: 2004 mustang v6 3.9l

IMO you could cam it practically the same, on the stock shortblock. But with a
dedicated build, I'd use 3.8 spec pistons and use the extra CR among other things.
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