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Sixpackstang's Official Split Port Swap Post

Discussion in 'V6 Mustang Articles' started by sixpackstang, Nov 7, 2004.

  1. metalman302

    metalman302 Active Member

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    That's because there are several ways of doing things. Also there are many different combinations of what you are starting with and what you are swapping to.

    The 95 and 99 motors use the same balance, bellhousing, and flywheel pattern.
     
  2. Tbone

    Tbone I come from the woods!

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    Can't believe there isn't a sticky on the split port swap.
     
  3. crabby patty

    crabby patty Member

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    The extra HP isn't why Ford added the IMRC. By closing off the short runner, torque is increased from low to mid RPM range. That makes the car more responsive at part throttle.

    I'm planning to swap in a complete '01 engine and 4R70W tranny and use the corresponding harnesses and PCM. If I can retain the return style fuel system that may make it a little easier as I wouldn't need the '99 up fuel pump and associated wiring. I'm still gathering parts for the swap and haven't yet decided how to tackle the fuel system. It looks like everyone else has opted to modify the original harness. I would rather not do that since the 4R70W needs the correct PCM to shift properly and that also seems to be the easiest way to keep the IMRC functional.
     
  4. NMStang218

    NMStang218 Hello My Name Is

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    Not sure if it matters but I'm using a 99+ pump in my 98 and have not experienced any issues. It's been about 5 years now.
     
  5. crabby patty

    crabby patty Member

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    Going the other way is where the problem would be (not having a variable pump). The '99 up is designed to be variable, with the PCM controlling the voltage to it. Lower voltage = lower pressure. By not using the '01 up PCM, it's getting full voltage all the time and the return style fuel system is what's regulating the fuel pressure for you.
     
  6. Xfree143

    Xfree143 New Member

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    I recently purchased the complete intake and fuel rails from a guy on eBay. He said he took it of a mustang so I am assuming some else did this mod. I separated the upper and lower intakes and found that the short runners were infact blocked off using a spacer plate. Can you tell me a little more info on why this is done and how does it run without doing this block?
     
  7. Markstang

    Markstang Polishing my banhammer Staff Member

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    I think we're going to need to see pictures of this.
     
  8. Xfree143

    Xfree143 New Member

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    image.jpg image.jpg image.jpg image.jpg
    Here are the photos.
     
  9. Markstang

    Markstang Polishing my banhammer Staff Member

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    OK that set of intakes came off of a f-150 they must have the short runners blocked on their v6s for torque. That's not like that on the mustangs. You can get rid of that when you put it in the mustang.
     
  10. Xfree143

    Xfree143 New Member

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    The metal spacer is required correct? So I will need to get a standard one. Did you notice the Bosh hardware on the intake?
    image.jpg image.jpg
     
  11. Xfree143

    Xfree143 New Member

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    It's a small 40mm, I looked it up and it showed up on a couple of web sites for propane conversion kits. It's way to small compared to the stock mustang.
     
  12. Markstang

    Markstang Polishing my banhammer Staff Member

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    no spacer is required at all. The upper intake mounts directly to the lower with just a gasket. The Bosch thing.. I think will be left behind as well.
     
  13. Phil II

    Phil II Cone Destroyer Staff Member

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    You'll need to rig up some -bracketry for the throttle cable and iac.
     
  14. Xfree143

    Xfree143 New Member

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    I now have the stock intake off. On the stock intake the short tube ports all have a butterfly system just like a carberator. Not having that on this f150 intake is ok?
     
  15. Markstang

    Markstang Polishing my banhammer Staff Member

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    Hold on, you have a splitport motor already? What exactly are you trying to do?
     
  16. Markstang

    Markstang Polishing my banhammer Staff Member

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    looked at your profile and garage, you have a 2003, why did you buy an upper and a lower intake? Your motor is already splitport, so the most you can do with what you bought is put the upper on your current motor if you put the lower without the butterflies on the motor you have now, you'd need to have it tuned to delete the IMRC functions and have the fuel tables fixed.
     
  17. Xfree143

    Xfree143 New Member

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    Lower intake came with the upper, fuel rails, plus a few other things at $225. At the time I wasn't aware that I didn't need the lower for the F150 intake. So I will use the stock intake.
    I already have a Bama tuner, will I need it adjusted with the new intake? Or am I good just as long as I use the stock lower intake?


    Thanks for the help.
     
  18. moman327

    moman327 Member

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    Will the f150 fit under the stock hood or is it like the windstar kit sorry to but in
     
  19. Xfree143

    Xfree143 New Member

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    no it will not fit on a stock hood. I'm trying to figure out if I can get a GT aftermarket scoop to see if it will cover the hole I would have to cut.
     
  20. Markstang

    Markstang Polishing my banhammer Staff Member

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    No tune necessary for the stock lower intake. Tune necessary for f150 intake since the Intake Manifold Runner Control valves are gone from it.