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Old 01-25-2013, 02:59 AM   #1
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5.4L

Is the swap to a 5.4 L really worth the trouble??
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Old 01-25-2013, 03:12 AM   #2
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What's you're plans and goals?
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Old 01-25-2013, 03:18 AM   #3
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What's you're plans and goals?
For nowy plans and goals are to make a good amount of power without FI, the car will mostly stay on the streets
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Old 01-25-2013, 03:26 AM   #4
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With the money you're gonna spend on the 5.4 you might as well get a power adder and have more power than a N/A car. That's unless you wanna be unique and really pursue N/A
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Old 01-25-2013, 04:54 AM   #5
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I've drove a 2001 gt that had a lightning engine swap in it and that thing was scary fast on take off and all the way till I let out... It pulled freakin hard lol
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Old 01-25-2013, 10:29 AM   #6
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Yeah it seems like it would be really fast lol and if i got a 5.4 for cheap would it be worth it, I mean if I payed full price yeah that would be a lot of money. And other than a new good what else would need to be done to make it work??
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Old 01-25-2013, 10:38 AM   #7
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Yeah it seems like it would be really fast lol and if i got a 5.4 for cheap would it be worth it, I mean if I payed full price yeah that would be a lot of money. And other than a new good what else would need to be done to make it work??
*hood not good lol
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Old 01-25-2013, 10:38 AM   #8
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Is the swap to a 5.4 L really worth the trouble??
Who makes a 5.4L?
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Old 01-25-2013, 11:20 AM   #9
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A 5.4 2v would add lots of torque to the low end but not much more hp. A 4v 5.4 would be a bat out of hell!! but i dont think they even made 5.4 4v's with out a supercharger.
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Old 01-25-2013, 11:26 AM   #10
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A 5.4 2v would add lots of torque to the low end but not much more hp. A 4v 5.4 would be a bat out of hell!! but i dont think they even made 5.4 4v's with out a supercharger.
Even better with a sc right? Haha
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Old 01-25-2013, 11:33 AM   #11
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A 5.4 2v would add lots of torque to the low end but not much more hp. A 4v 5.4 would be a bat out of hell!! but i dont think they even made 5.4 4v's with out a supercharger.
Yeah like I know the 5.4L engine in my F150 is a 3v but I wouldn't use that engine, I love that truck and yeah a 5.4 L 4v would be crazy
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Old 01-25-2013, 01:02 PM   #12
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Yeah like I know the 5.4L engine in my F150 is a 3v but I wouldn't use that engine, I love that truck and yeah a 5.4 L 4v would be crazy
A 3v would be good gains. Just even more work than a 2v to shove it in.
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Old 01-25-2013, 01:15 PM   #13
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A 3v would be good gains. Just even more work than a 2v to shove it in.
Hahah yeah no pain no gain huh?
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Old 01-25-2013, 03:09 PM   #14
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A 3v would be good gains. Just even more work than a 2v to shove it in.
I know the 5.4 3v is like 300ish hp...maybe 320??
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Old 01-25-2013, 03:10 PM   #15
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But with swapping in a 5.4 you will need to modify some stuff also
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Old 01-25-2013, 08:08 PM   #16
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There would be quite a bit to swap out, unless your gonna build it and boost it I really wouldn't mess with it, not as much aftermarket for 5.4 as there is a 4.6..
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Old 01-25-2013, 10:19 PM   #17
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There would be quite a bit to swap out, unless your gonna build it and boost it I really wouldn't mess with it, not as much aftermarket for 5.4 as there is a 4.6..
Yeah very true
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Old 01-25-2013, 10:28 PM   #18
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What makes a 5.4 different from a 4.6 anyway the size of the pistons, the longer throw?!? What
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Old 01-26-2013, 11:44 PM   #19
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The 5.4 just has a taller deck height. And a little wider. Pistons are same heads cams sensors computer. Everything is the same. Makes for a easy swap. I havr the write up on a 5.4 build if anybody is interested
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Old 01-27-2013, 12:37 AM   #20
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The 5.4 just has a taller deck height. And a little wider. Pistons are same heads cams sensors computer. Everything is the same. Makes for a easy swap. I havr the write up on a 5.4 build if anybody is interested
I'd be interested in reading that write up, I'm always up for learning something new
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Old 01-27-2013, 12:57 AM   #21
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I would also be intrested in the writeup, i love reading and learning new things
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Old 01-27-2013, 01:37 PM   #22
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I would also be intrested in the writeup, i love reading and learning new things
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Old 01-27-2013, 04:10 PM   #23
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Technical:

Difficulty: It’s pretty much a direct swap besides the intake needing the 5.4 to 4.6 adapter plates to use the PI style mustang intake or the use of the HPS intake.

Oil Pan: With the oil pan you need to use the 4.6 oil pan along with the 4.6 pickup tubes, both bolt directly to the 5.4 with only MINOR modification to the pan. The 4.6 pan has two fins on the shallow side of the pan they need to be bent over about 1/4". Just take a rubber hammer and whack at em' a couple times. Check your crank throw clearance before you install permanently. This needs to be done in order to clear the crank throw. If you don’t do this your crank&rods will hit them and could damage something severely. Before you put the 5.4 in the car if you're going to use stock manifolds, you need to grind down the passenger side manifold on the flange that the mid pipe bolts up to. (The side that’s closest to the frame rail) If you don't do this the header/exhaust manifold will hit the frame rail especially if you’re using the stock rubber mounts. You don't want to have to fix it. Do it or get the bang-rattle-bang.

Motor Mounts: While the motor is out it would not hurt to upgrade to polyurethane motor mounts or a set of solid motor mounts. The 4.6 motor mounts need to be used because the 5.4 truck mounts will not work and yes the 4.6 mounts bolt right to the 5.4 block they share the same bolt pattern.

Exhaust: The 4.6 and 5.4 are basically the same motor, besides the added deck height (hence the extra stroke). Due to the added deck height the pipes are spread apart a little more and they don't line up in the stock humps (In the transmission cross-member) but they’re close. Look at it like this the motor is a V shape so the taller the deck height the further away the two points become therefore making the motor wider and taller and making your existing pipes effectively shorter. It can get the pipes kinda close to the floor-pan which is a good reason to add some length to the down angled portion of the mid-pipe. When you put the mid pipe on you have to fuss with it a little to get it in the right spot, so be patient. Sometimes simple persuasion will get it there, sometimes you have to cut and weld in a bit of tube and often you'll need to extend the crossover in the stock H-pipe. Not always but often enough. I (330CubeGt) was able to run my Mac pro-chamber and Cat-back with no modification, so any Mustang Mid Pipe or Cat-Back will work with minor modification at worst. Muffler shops can do this for 50-100 bucks if it becomes necessary for your case. Just letting you know because I have heard some people saying you always have to cut/hack/weld your exhaust to make it work and you don't always have to.

Just an FYI: 4.6 long tube headers will absolutely not fit with a 5.4 simply because of the added height/width it will put the headers up into the floor and they would hit all kinds of stuff. 5.4 Long Tube headers are made by FTP. PM Myillwillinc for contact info for FTP. For shorty headers you can use JBA or FRPP right out of the box. BBK's have never fit well without being modded that anyone has reported. Custom longtubes can easily cost several thousand dollars so save the time and money and just call up FTP and get theirs.

Heads: As far as the heads the 4.6 and 5.4 are the same, so you can use your 4.6 heads if needed.

Clutch/TC: You will need an 8 bolt flywheel/flexplate. 96-01.5 cars have 10.5" clutches. 01.5-04 have 11" clutches. As far as I (r3d) know the TR3650 trannies are the ones with 11" clutches. You can buy an 8-bolt flywheel for 10.5 clutches, and a 10.5" clutch of your liking, a new TOB and a new pilot bearing (5.4's usually DO NOT come with them) and it'll connect right up. 10.5" clutches are cheaper and easier to find but the 11" will work just as well. This is only really a matter of decision for 01.5-04 cars. r3dn3ck retro-fitted his 11" to a 10.5 and it was stupid easy. Auto's will need the correct flex plate. Details on which one for that should be updated in this post soon.

Fuel System: Stock rails fit the HPS intake most times. If the crossover tube is too short you can chop it off and replace it with a longer section of high-pressure fuel line. Cost for that fix is usually about 10 bucks. You can buy aftermarket fuel rails for a 4.6 and use those just as easily but for substantially more cost. You get EXACTLY what you pay for in fuel rails. Buy nice ones with screw on brackets. No half-round hold-downs, real brackets. I (r3dn3ck) recommend aeromotive.

Most cars can technically use the stock 19lbs yellow top or 21lbs pink top injectors but they tend get to 100% duty cycle around 5000rpm which is bad. 24lbs is plenty for most applications but 30's are fine as well. If you have heads and cams and headers and bolt-on's then you should definitely step up to a minimum of 24's and really, get the 30's. If you use a power adder, get an injector that can feed it. If you need help figuring out your fuel delivery needs, then ask in the big 5.4 thread.

Your stock fuel pump is enough for direct swaps. If you're doing anything more than that (big heads, cams, nitrous, etc...) then you really need to start with an SVT focus pump and possibly go much larger depending on what power level you're looking at. Don't underestimate the need for fuel delivery. 5.4's are thirsty at high RPM's. A failure to provide enough fuel will stack harm up on your motor.

Tune: A tune is really a must; just a little mail order street tune to dial in the air fuel ratio is fine (If you have a wide band air/fuel gauge). Or you can put the car on the dynamometer and make a few pulls and get a dyno sheet with your RWHP/RWTQ and AFR read out. Original ECU/computer can be used along with the original engine harness.

Sensors: Use all the sensors from your 4.6 as some of the 5.4 sensors are different even though they share a connector (usually the signal voltage range is different when they're different). Save the hassles and use ALL of your stock 4.6 sensors. Crank position, cam position, FRPS, O2's, water temp, oil pressure, etc...
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Old 01-27-2013, 10:43 PM   #24
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Thanks man! Very informative and sounds pretty tempting
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Old 01-27-2013, 10:45 PM   #25
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Anyone needing a 5.4 let me know i have one sitting here. Just a shortblock with accessories. No heads

---------- Post added at 10:45 PM ---------- Previous post was at 10:45 PM ----------

In kansas city area
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Old 01-27-2013, 11:34 PM   #26
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Anyone needing a 5.4 let me know i have one sitting here. Just a shortblock with accessories. No heads

---------- Post added at 10:45 PM ---------- Previous post was at 10:45 PM ----------

In kansas city area
How much? Just wondering?
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Old 01-27-2013, 11:34 PM   #27
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Sounds like an awesome build! I wanna start buyin everything that i need so when im outta the marine corps and go home for good i can have a built monster! Haha nice job with all the technical advice.
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Old 01-27-2013, 11:36 PM   #28
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Sounds like an awesome build! I wanna start buyin everything that i need so when im outta the marine corps and go home for good i can have a built monster! Haha nice job with all the technical advice.
Yeah anything is possible with time, money and creativity.

And thank you for your service to our country!
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Old 01-27-2013, 11:45 PM   #29
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I'm taking offers. Comes with a aluminium flywheel, water pump, power steering pump, ac compressor and alternator.
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Old 01-28-2013, 12:00 AM   #30
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Yeah anything is possible with time, money and creativity.

And thank you for your service to our country!
I think i can pull it off with the help of my father. Ive seen some very creative improvisation come from him over the years. And thanks man, im glad to have the opportunity to serve.
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Old 01-28-2013, 01:07 AM   #31
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My friend is buttoning his lightning swap up so ill get you some pics...its monstrous in that car lol...gonna need a 6" cowl with a hole cut in it to clear the eaton.
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Old 01-28-2013, 01:12 AM   #32
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My friend is buttoning his lightning swap up so ill get you some pics...its monstrous in that car lol...gonna need a 6" cowl with a hole cut in it to clear the eaton.
Nice! Thats gonna be nasty as ****! What kinda power are those motors capable of?
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Old 01-28-2013, 01:42 AM   #33
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He won't need that big a hood. I seen somewhere that there was custom intakes made where you can still use your cai on the passenger side.

---------- Post added at 01:42 AM ---------- Previous post was at 01:40 AM ----------

And upgrading the k member and motor mounts will give another inch or so
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Old 01-30-2013, 08:47 PM   #34
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Anyone needing a 5.4 let me know i have one sitting here. Just a shortblock with accessories. No heads

---------- Post added at 10:45 PM ---------- Previous post was at 10:45 PM ----------

In kansas city area
I'm also in that area.... Shoot me a pm with a price please.
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Old 01-30-2013, 11:37 PM   #35
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A 5.4 2v would add lots of torque to the low end but not much more hp. A 4v 5.4 would be a bat out of hell!! but i dont think they even made 5.4 4v's with out a supercharger.
I was reading a thread on another forum that a guy put a 5.4l DOHC from a Lincoln navigator in there mustang with no too much work to be done
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