1994-2004 V-6 3.8 and 3.9L V6 Mustangs

Engine swaps

Old 6/23/13, 11:27 AM
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Hey im looking to swap out he 3.8L in my 2000 convertible. I was wondering if i should go with a 302 from a foxbody or a 4.2L from an f150. Which would be a better/cheeper option?

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Old 6/23/13, 03:43 PM
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The 302 will give you more power and potential, but its a good amount more work. The 4.2 is not much different then the 3.8, mainly the crank. You could swap cranks and make you 3.8 a 4.2. Its very common to do.
Old 6/23/13, 09:10 PM
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You could find 4.6 motors online from a gt for a decent price and a lot of the ones I have seen come with the pcm makes the swap real easy
Old 6/23/13, 09:30 PM
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Originally Posted by shaunrc
You could find 4.6 motors online from a gt for a decent price and a lot of the ones I have seen come with the pcm makes the swap real easy
How much would you guess the 4.6 would cost and it would nearly be a direct swap right? I could reuse my tranny in my car with it?
Old 6/24/13, 12:51 AM
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Originally Posted by THEmightyBULL
How much would you guess the 4.6 would cost and it would nearly be a direct swap right? I could reuse my tranny in my car with it?
I haven't done the swap myself but I imagine its a direct swap cause its the same frame body style and I have seen 4.6 motor online anywhere from 500 to 1200 with the ecu
Old 6/24/13, 08:17 AM
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Originally Posted by THEmightyBULL
How much would you guess the 4.6 would cost and it would nearly be a direct swap right? I could reuse my tranny in my car with it?
To put a 4.6 into a V6 car requires changing the K member to a 96-04 GT K member
Old 6/24/13, 11:01 AM
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Originally Posted by bluethunderhorse
To put a 4.6 into a V6 car requires changing the K member to a 96-04 GT K member
Oh OK my bad for the bad info
Old 6/24/13, 08:28 PM
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Put forged internals in the 3.8 and turbo it. Otherwise sell it and buy a GT.
Old 6/25/13, 09:00 AM
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Originally Posted by MustangFrontier
Put forged internals in the 3.8 and turbo it. Otherwise sell it and buy a GT.
I have been thinking on buying a gt, but this car has a lot of sentimental value to me so i kinda dont wanna sell it.
Old 6/25/13, 10:59 AM
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Best bet is forged 4.2 internals in the 3.8 block and turbo it then. Swapping in a V8 into those cars is pita.
Old 10/11/13, 04:14 PM
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Originally Posted by MustangFrontier
Best bet is forged 4.2 internals in the 3.8 block and turbo it then. Swapping in a V8 into those cars is pita.
Sorry for the late reply and yeah that is what i might do. Thanks for the help!
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