Engine 4.6 --> 347

Discussion in 'SN95 4.6L Mustang Tech' started by marksolis01, Apr 24, 2013.


  1. Bob Hughes

    Bob Hughes Member

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    I've been running stock internals and 12lbs of boost for 1 year now with not one issue or hickup. 450hp is plenty of power on the road to have fun and turn heads....and still be reliable enough to be a daily driver
  2. Bob Hughes

    Bob Hughes Member

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    Cobra heads do you no good unless you're going 4v.....which then you need different ecm and wiring. You need to stick with 2v parts


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  3. Bob Hughes

    Bob Hughes Member

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    my only disagreement to that is mpg's.....I'm getting 16mpg on my setup.....but I knew what I was getting into when I built the car.....
  4. sneaky98gt

    sneaky98gt Mustang Master

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    For me, city driving is worse than stock. But highway mileage is as good as ever. With cams and 3.73s, I got almost 25 a couple of tanks ago on a mostly-highway trip.
  5. 1987stangman

    1987stangman Member

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    I totally agree with you. All of this pretty much applies to the Fox Mustangs also which I have been down that road a few times over the last 12 or so years of ownership with my 87 GT. Since my newest Mustang I have only owned for 2 months now still has low miles I will play with the 2V and have some fun. I just wanted to go down a different path when the time comes and do something different. I've done a lot of stuff with my 87 GT and personally I like working on the modular 2v over the pushrod 5.0L. I will be putting my Fox up for sale soon so I will be able to reinvest the money I make off of it to fund new things for my 2000.

    Though, if the time came right now that I needed a new engine I would head down the 3V route, just me, but everyone has their "thing" they want to do with their car, right? If not this we couldn't consider this a hobby.
  6. sneaky98gt

    sneaky98gt Mustang Master

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    I've worked on both mod motors and 5.0s, and I've never understood why people have a conception that 4.6s are harder to work on. They really are simple and easy to work on. About the only things that I can think of that are difficult are long tube headers and that friggin starter. But other than that, I can completely disassemble the motor from my car with tools I can hold in 2 hands. :shrug:

    Also, 2-valves are starting to come around to the point where they're fairly affordable to go fast with. If you shop around, you can find forged rods/pistons for $1k-ish, and used superchargers are going for <$3k all day long. Put the two together and you've got a reliable 500 rwhp car that you can comfortably take your girlfriend on a 3 hour trip in, for a very reasonable total cost.

    I understand the 3-valve idea, but for the same money to swap in a 3-valve, you can build the bottom end of a 2-valve and put a good chunk towards forced induction.
    trinity_gt likes this.
  7. 1987stangman

    1987stangman Member

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    Yea, I was one of those guys that never owned a 2v and "heard" they were harder to work on than their push rod powered brothers and sisters but after owning my first 2v and getting my hands dirty did I realize that I was having more fun. That's why I got another one. I really should have never sold my 96'.

    Right now I have changed out the factory exhaust and I have a cold air kit and I want to buy a hand held tuner and that all I plan on doing for now. Going to concentrate on appearance on this Mustang. My plan is a entry level centi blower, set of good cams, and gears should get me by until the mileage starts racking up. It's my DD too so I cant go to wild.
  8. marksolis01

    marksolis01 New Member

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    I found a '03 marquis (48k) & '05 towncar (57K)hope this would a direct swap like you instructed. Let me know what are your thoughts on this swap will be picking up one of these 4.6
  9. sneaky98gt

    sneaky98gt Mustang Master

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    Should be fine. I don't see any reason why they wouldn't work.

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