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Swap 4.0 to 5.4?

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Old 05-20-2011, 11:38 PM   #1
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Default Swap 4.0 to 5.4?

I think instead of doing FI this is the way I'm thinking of going. I thought of doing the 4.6, but I don't want to pay all the money to have the same HP as a stock GT. First of all, can I use a crate 5.4 without a supercharger and get decent HP? Then I was wondering if the tremec T-56 fit in our cars? This isn't something I'm planning on doing right away obviously, but I do plan on starting to save immediately if it is feasible to do. And no I don't want to trade in my car for a GT or GT500, so none of that. I searched for threads about this and came up empty handed, so sorry if I over looked something.
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Old 05-20-2011, 11:58 PM   #2
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I think at least one member on here has swapped a 5.4 into their previously 4.0...but are you considering this because of the power gains? Sound? Other?
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Old 05-21-2011, 12:00 AM   #3
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I know a few members have done it. Instead of using a Cobra long block, they actually used a Lincoln navigator 5.4. It's NA and there was something better about it that I can't remember for building an engine around. In any case, it's a lot of work to do.
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Old 05-21-2011, 12:41 AM   #4
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I want to have a really good base to work from to build good power.
The sound of course is a plus. I wasn't wanting to use a motor directly from a GT500 because of the price, so the navigator 5.4 sounds good. I thought that I wanted to keep my 4.0, but this sounds just as good of a plan. Do you think I could get close to this swap with around a 10k budget?
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Old 05-21-2011, 03:38 AM   #5
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Do you think I could get close to this swap with around a 10k budget?
If your going to be doing the work yourself. The modern electronics in these things can be a biotch.

You might be able to pull it off depending upon where you source your engine and transmission from. If you plan on pulling any real power I suggest the TR6060 or at least a good 6 speed.
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Old 05-21-2011, 03:46 AM   #6
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I know a few members have done it. Instead of using a Cobra long block, they actually used a Lincoln navigator 5.4. It's NA and there was something better about it that I can't remember for building an engine around. In any case, it's a lot of work to do.
If you can find a wrecked Navi it's the one of the better bang for your buck options out there. The engine out of the Navi is the 5.4L 4v non supercharged. Basically almost the same engine in the GT500. It's a much better platform for producing power than the 5.4L 3v in the F150.
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Old 05-21-2011, 08:29 AM   #7
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Anytime you swap the engine your going to have to find compatable drive line components or ways to modify them. Drive shaft, transmission rear end will almost certainly have to be replaced with something else. Then the computer and wiring harness are another concern. In the long run it might be easier to buy a crate motor (which really does provide a solid bottom end). Engine swaps are costly unless you find all parts dirt cheap and install them yourself.
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Old 05-21-2011, 09:23 AM   #8
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Someone else has done this. I would find the thread for you but search is giving me trouble again.
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Old 05-21-2011, 12:00 PM   #9
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Tanner, I'm sure with modification a T56 would fit but they have cable clutches. 2005+ = hydraulic clutch.


I don't see a point in a 5.4 swap for your Tanner out of a navigator being it will be similar power of a 4.6 swap, but a 5.4 has more potential with FI but you will be spending about double what your car is worth!
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Old 05-21-2011, 01:07 PM   #10
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I know that by the time I'm done with all of this I will have spent may more than my car is worth, but by the time I have all the funds avalible my car will be close to 100k miles. So all my warranties will have run out, and it would be nice to have a good project. I know the rear end will have to be replaced maybe with a GT rear end? If I did end up having to use a F-150 motor can those be made to make good HP? I want a 6 speed transmission after the swap, so would it be better to use a GT500 tranny or a 5.0? Sorry for all the questions I'm just trying to get a good price range set up.
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Old 05-21-2011, 02:57 PM   #11
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Eric (Plstang) changed his 4.6 in his GT to a 5.4. If you can't afford a GT500, don't even try this. He had quite a bit invested in his car. It was an awesome car, but money was no obstacle for him.
http://mustangforums.com/forum/2005-...o-631rwhp.html
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Old 05-21-2011, 04:55 PM   #12
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Quote:
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I want a 6 speed transmission after the swap, so would it be better to use a GT500 tranny or a 5.0? Sorry for all the questions I'm just trying to get a good price range set up.
Go with the TR6060 6 speed out of the GT500. Stay as far as you can away from that Chinese piece of crap in the 5.0L.

You can defiantly mod the 5.4L 3v out of the F150. I know a few have but the 4v will always be a better platform for high end HP.
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Old 05-21-2011, 06:04 PM   #13
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Tanner girl, you'll need a plan...
If you have a $10K budget, you can make this happen with the Navigator mill and the GT500 6spd + the labor with electronics.
Get the 4 valves 5.4 (99/04) because it's good for 400 ponies with minor work.
Later on, you can Vortech this thing and have a beast.
Those Navi engines are available for $1500 from salvage yards. (LKQ etc...) so you'll have $8500 to do the rest.
Just make sure you have a good speed shop in your area to help you finalized all this.

Also, glad to see you learned a lot in the world of Modding young grasshopper, and fear isn't stopping your will
Just don't listen to tire kickers that say it's not worth it etc... those guys never achieve anything anyhow.
That mod is worth doing even if you had a GT so your sixxer makes it an even better candidate.
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Old 05-21-2011, 06:21 PM   #14
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Go with the TR6060 6 speed out of the GT500. Stay as far as you can away from that Chinese piece of crap in the 5.0L.

You can defiantly mod the 5.4L 3v out of the F150. I know a few have but the 4v will always be a better platform for high end HP.
I keep hearing of people having problems with the new 5.0. I think your right a TR6060 6 speed would be damn nice. I'm not quite sure if I should look for an auto tranny or a manual. I have time to figure it out though. Its not going to be a straight track car so I guess I should go for manual.

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Tanner girl, you'll need a plan...
If you have a $10K budget, you can make this happen with the Navigator mill and the GT500 6spd + the labor with electronics.
Get the 4 valves 5.4 (99/04) because it's good for 400 ponies with minor work.
Later on, you can Vortech this thing and have a beast.
Those Navi engines are available for $1500 from salvage yards. (LKQ etc...) so you'll have $8500 to do the rest.
Just make sure you have a good speed shop in your area to help you finalized all this.

Also, glad to see you learned a lot in the world of Modding young grasshopper, and fear isn't stopping your will
Just don't listen to tire kickers that say it's not worth it etc... those guys never achieve anything anyhow.
That mod is worth doing even if you had a GT so your sixxer makes it an even better candidate.
Thanks Pascal.
If this happens I plan on FI the 5.4 after I got my finances built back up. There are a few decent speed places in Tulsa that I have heard about. I guess I need to do some research.

So besides the rear end, motor, transmission, computer what other major components will I need? I know very vague question sorry guys.

Just looked up a few parts.
Navi motor refurbished - $3,000
TR6060 w/o clutch - $1,750
TR6060 w/ clutch - $3,000
Those prices don't sound terrible to me, and I know there are going to be A LOT more cost to this, but the basic components are cheaper than I was originally thinking.
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Old 05-21-2011, 07:05 PM   #15
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Like I said, get a budget for all the parts and another one for the speed shop.
$6K between engine and tranny, I'm sure you can beat that.
Call FRPP tech line (800 663-5788) on Monday and tell them what you're up to...
They can cut a lot of guessing off for the shops.
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Old 05-21-2011, 10:52 PM   #16
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Like I said, get a budget for all the parts and another one for the speed shop.
$6K between engine and tranny, I'm sure you can beat that.
Call FRPP tech line (800 663-5788) on Monday and tell them what you're up to...
They can cut a lot of guessing off for the shops.
Thanks a lot, Pascal. Very helpful.
It will take me awhile to be able to do this, but I think it will be completely worth it in the end.
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Old 05-22-2011, 10:10 AM   #17
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I might do it before you do then...
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Old 05-22-2011, 02:34 PM   #18
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Be my guest.
It would be awesome to see a build thread over something like this with a sixxer.
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Old 05-22-2011, 04:40 PM   #19
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Do itttt!
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Old 05-22-2011, 07:59 PM   #20
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I keep hearing of people having problems with the new 5.0. I think your right a TR6060 6 speed would be damn nice.
Just another reason to build my own 5.0 rather then buy a new one.
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Old 05-22-2011, 07:59 PM
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