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5.4l headers

  • Thread starter Thread starter redmustangt
  • Start date Start date Mar 23, 2011
R

redmustangt

Member
May 14, 2009
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Mar 23, 2011
#1
  • Mar 23, 2011
  • #1
I am doing the 5.4l swap in my mustang and I have been hearing that because of the height difference in blocks mustang long tube headers wont fit. If this is true does anyone know if long tubes from an F150 would work?
 

N8Dogg98

15 Year Member
Apr 4, 2005
3,872
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184
MN
Mar 23, 2011
#2
  • Mar 23, 2011
  • #2
I don't know for sure, but I do know that there isn't much room for anything with the 5.4 engine. I doubt the F150 headers would work, and think your best may be to have a custom set of headers fabbed for your car.
 

Dark04GT

10 Year Member
Apr 27, 2008
758
62
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NC
Mar 23, 2011
#3
  • Mar 23, 2011
  • #3
redmustangt said:
I am doing the 5.4l swap in my mustang and I have been hearing that because of the height difference in blocks mustang long tube headers wont fit. If this is true does anyone know if long tubes from an F150 would work?
Click to expand...


From everything I've read- long tubes (doesn't matter mustang or f150) won't fit unless you get a custom set made. You are stuck with shorties. Which brings me to my next point.... are you sure you want to do the 5.4L swap? There is practically no gain in this swap over the 4.6L unless you plan on some significant head/cam work (or put a 4v 5.4L in).
 
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redmustangt

Member
May 14, 2009
33
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Mar 24, 2011
#4
  • Mar 24, 2011
  • #4
Yeah Im doing the swap because my 4.6 crapped out on me and I picked up a new supercharged 5.4 for a good price.
If I have to have a set of headers fabbed I figure I could have a shop cut my current LTs and just make them taller.
 

Dark04GT

10 Year Member
Apr 27, 2008
758
62
59
NC
Mar 24, 2011
#5
  • Mar 24, 2011
  • #5
redmustangt said:
Yeah Im doing the swap because my 4.6 crapped out on me and I picked up a new supercharged 5.4 for a good price.
If I have to have a set of headers fabbed I figure I could have a shop cut my current LTs and just make them taller.
Click to expand...

The bigger issue is that the block is wider and the space to squeeze all that piping out gets much smaller with the 5.4 in our engine bays. I hope your shop is up to the task, I think it is going to much more than a couple simple changes to your LTs.... If you get it to work I would love to see some pictures.
 

Green&GoldGT

Member
Aug 1, 2005
302
0
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Virginia
Mar 28, 2011
#6
  • Mar 28, 2011
  • #6
There's a place called FTP that makes 5.4l headers for mustangs. I think it's only worth the cost if your N/A otherwise stock headers with a customized midpipe. If you bought a Lightning engine you also need a gigantic hood.

5.4 Swap write-up
 
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