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4.0 from 3.8 swap.

Discussion in '2005-2010 V6 Mustang Tech' started by 6w5, Oct 11, 2008.

  1. Justin251

    Justin251 hotpocketssssss

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    The difference is that those swaps were fast. :lol:
     
  2. Galeocerdo

    Galeocerdo Cuvier

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    Fastback on the Cobra? No that took several months of custom fabrication to do since they kept everything in the interior including the dash from the cobra as well as the engine and shock towers.
     
  3. Justin251

    Justin251 hotpocketssssss

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    What does that have to do with it being fast?
     
  4. Galeocerdo

    Galeocerdo Cuvier

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    It was unique more than just fast. dropping a v8 is easy to do. but the 4.0s make roughly the same horsepower in less weight as the 94-04 GTs so with a little extra work it is easy to make it to 450 hp V6 with less weight than had you put a V8 in it. so there's the fast part
     
  5. Justin251

    Justin251 hotpocketssssss

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    And FRPP 5.0 would have been my choice. Also a ford big block weighs less than a 4.6 modular.

    Really any other motor thant he 4.6/5.4 modular and your gonna lose weight.
     
  6. Galeocerdo

    Galeocerdo Cuvier

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    Well a 4.0 turbo mated to a T-56 is my choice. Another thing to consider is the difference in availability in parts for the 3.8 vrs the 4.0.
     
  7. cobra232

    cobra232 New Member

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    it won't bolt up. the 4.0 has the cologne FWD and RWD Lima and vulcan small bellhousing. it is not the saem as the 4.6 or the 3.8/5.0/windsor. it is the same as the FWD essex with the small bell
     
  8. cobra232

    cobra232 New Member

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    ???

    not quite. anyways a 4.2L swap is a far better choice than the 4.0. it makes similar power stock and can handle alot more than the 4.0 built and there are far more parts for the essex than there is for the 4.0
     
  9. samrawet

    samrawet New Member

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    thanks for images
     
  10. BISKIT

    BISKIT New Member

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    I don't know what to tell you but we have done it twice.

    If you want to come down to the shop, I can show you but you better bring that 3 grand cash. :D
     
  11. BISKIT

    BISKIT New Member

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    Now where the hell are you getting your info. Saying that the 4.2 (basically the same Essex motor) is more stout and can handle more than the 4.0 SOHC is just ludicrous.
     
  12. taylor0987

    taylor0987 New Member

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    what have you done twice? bolt a 4.6 4r70w into a 4.6 05+ mustang? That is fine and good and I am sure it works but different than what this topic is about. or are you saying you have bolted a 3.8 4r70w into a 4.0 05+ mustang?? or a 4.6 4r70w into a 4.0 05+??


    What I am trying to get you to answer is if the 4.0 and 4.6 share bellhousing bolt patterns. if they do, then a 3.8 4r70w (the topic of this thread) won't bolt to a 4.0


    3.8 shares the bellhousing bolt pattern with the 5.0
    the 4.6, except for some very early (model year 91? 92?) 4.6 blocks have a different bellhousing bolt pattern from the 3.8.
     
  13. mymustang44

    mymustang44 6th Gear Member

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    Not saying it's worth it, but isn't the 4.0 a better to mod then the 3.8. I mean i have heard of a lot better gains from the 4.0 then the 3.8, although obviously I support the 4.2 swap instead.