3.9 = 3.8? - Mustang Evolution

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Old 04-03-2009, 08:33 PM   #1
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3.9 = 3.8?

I have a 04 3.9L and its hard as balls to find stuff for it, most of the things that look good only say 3.8L. Whats the damn difference? and will 3.8L stuff fit on a 3.9?
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Old 04-03-2009, 08:38 PM   #2
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Re: 3.9 = 3.8?

Yes, you can use any and all 3.8 parts on a 3.9 The 3.9s resulted from Ford using some leftover cranks from their vans in the Mustang. Outside the shortblock, all other parts are the same.
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Old 04-03-2009, 08:39 PM   #3
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Re: 3.9 = 3.8?

tru dat tru dat
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Old 04-03-2009, 10:44 PM   #4
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Re: 3.9 = 3.8?

yea no real meaningful difference
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Old 04-04-2009, 10:38 PM   #5
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Re: 3.9 = 3.8?

yea ur definitly good to go buddy all 3.8 stuff will work and perform perfectly.... I went through the same thing wen I first started modding my 04' lol
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Old 04-05-2009, 08:27 AM   #6
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Re: 3.9 = 3.8?

Like Ben Said all parts will fit !!
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Old 04-10-2009, 12:54 AM   #7
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Re: 3.9 = 3.8?

got an 04 3.9L every single part i have got besides my exhuast has been labled 3.8L only. so no worries. best way to find parts for your car is look for 2003 3.8L V6
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Old 04-25-2009, 01:15 PM   #8
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Re: 3.9 = 3.8?

im having the same problem i cant find any parts for a 3.9, but if yall could give me sure advice that the 3.8 parts will work ill be very happy thanks

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Old 04-25-2009, 07:49 PM   #9
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Re: 3.9 = 3.8?

Yea all parts willing definitly work! I stumbled on the same issue wen i got my stang as well but all my parts ordered definitly say 3.8
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Old 04-25-2009, 10:22 PM   #10
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Re: 3.9 = 3.8?

all parts will fit for the most part! now when u get to buying a tuner it will be a lil tricky! i know with my predator i had to download a program from there website so it could program mine 3.9! im not sure how other name brand tuners will work! just contact each seller before completing the transaction to make sure it will fit! that way if he says yea and it doesnt you will be able to get a full refund! Good luck bro!
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