Greetings

I have tentative plans to swap a 5.4 3V into a S197 Mustang. Seems like a fairly straight forward swap for the electronics & accessories. Have decided to run the stock intake, as this will be an 87 octane tune DD, and want a strong torque engine. Because of the position & height of the 5.4 TB compared to the stock mustang, I plan on a custom CAI cowl induction system & hood scoop, the new 5.0 80mm TB, modified intake to accept TB & delete plates, stage 2 comp cams, LT's, not sure on internals if I want to add forged rods & pistons.

Any tips would be appreciated, and leads to buy a complete 5.4 3V, I'm in CT.

Thanks in advance.

 

Moving to ENGINES.

 

Find a wrecked F150/expedition first. You're going to need the engine/trans + all the wiring and computers. Do all the engine work before you install it. When you get ready to bolt it in, take the fenders/hood/front end of the Mustang completely apart. Have the headers and trans all bolted up and slide it all in place.

 

Ignore all this stuff here....


To the OP. you should basically only need the long block plus the intake manifold. I do not believe they make an aftermarket intake manifold for 3v 5.4 like they do the 2v 5.4L. You will probably have to swap the 4.6L pan and oil pick up tube because I believe the oil pan on the 5.4 truck engine is deeper than the 4.6 mustang engine. The electronics and accessories should all bolt on and plug and play. Tuning via sct. You will probably have a hard time fitting long tube headers on that car because of the added deck hieght of the 5.4L. You will probably get more answers and more help from a mustang board. As for finding an engine, look any where on line and make a few phone calls to wrecking yards in your area.

 

Thanks for the input. A few Mustang guys have done varies 5.4 2V,3V,4V swaps with different issues for each engine & chassis combo. There are a couple of builders that make intakes, but they are very expensive. I have also seen some homemade intakes of nice quality, but they seem to work best with FI. LT's will fit, but you have to work around the steering column, & widened the H pipe.

My 05 GT is a DD with 200K on it, still runs great, but want a little more to run with the newer cars. CT is an emissions state, so the stock intake & electronics makes it a lot easier. Plan a TCI tranny build with the above mentioned engine build. Being a DD I would like to have everything together for a weekend swap, then hit the tuner.

Missed an 08 engine with only 25K on it for 1K, so I am just expanding my search.

If anyone has done these mods to their 5.4 3V, I would be interested in TQ & HP #'s.

Thanks

 

Um what? Last I checked, the 4.6 and 5.4 had different blocks...and heads...and basically everything. And the 4.6 mustang oil pan will bolt up to a 5.4 truck motor?? AND the 5R55 transmission from the 4.6 bolts up the same as a 4R75 truck transmission.

I guess that's why sooo many people have done this swap

 

The block is essentially the same. Same mount bolt locations same bell pattern. ALL Modular engines have the same bell pattern and mount locations making them all interchangeable if you wanta do it. some require more work then others to make work. Modular engines are considered 4.6 5.0 5.4 and 6.2
its possible to install a 3v 5.4 in place of a 2v with the mods Gotts said.. theres also the V10 mod motors that have been swapped into f-150's. Probably be kinda tough fitting one in a mustang..

 

the motor mounts and bell housing are the same. The heads are the exact same. The cams are the exact same. The only difference between the 4.6 block and 5.4 block is the added deck height of the 5.4L. Heck the pistons are interchangeable. Yes the pans are interchangeable.

 

That is correct. I have an extra 4.6 engine and two 5.4 engines sitting in the garage and have spent time comparing the two. I also have a 6 speed from a 6.8 that will bolt right up to all the engines including the one in my truck.

 

I know its correct. The Lincoln town car in my signature is powered by a 5.4L. If you look closely you will see where I had to cut a hole in the hood so I could actually close it.

 

Haha Yea I know. Was just agreeing with you.

 

I would think it would flat fail on a basic visual inspection. At least where I live you can only swap newer and within the same vehicle class, as light truck emissions standards are different than passenger car standards.

I religiously watch all the stuff on spike's powerblock, but the majority of the stuff they do wouldn't fly here.

 

As long as all the ECM monitors are a go & you have no cels, you will pass. They don't even sniff the newer vehicles. That's one reason for staying with the stock intake, the other reason is availability of an affordable manifold.

Any leads on motors & HP & TQ #'s from similar builds would be appreciated.

Love that Lincoln!!

Thanks for your help, will keep you posted.

 

Here's a link to a build similar to what your are planning:
http://www.s197forum.com/forum/showt...light=5.4+swap

 

to me tb are a waste of money at your power levels.

before i would do motor swaps and using truck intakes and hood scoops i would consider.

4.6 to 5.0 stroker kits. or a rebuilt 4.6 with money spent on professionaly done heads.
displacement if fine and great but heads are where it is at. the internet is full of guys doing motor swaps but when it is your dailey driver that has to pass inspections and get you to work, go with the tried and true.
dont forget that the 5.4 will be heavier

do you have the dimension of just how much taller the 5.4 will be with the truck intake?