I have a 97Ford Expedition XLT with a 4.6 that has a knock in it. A friend of mine has a 4.6 out of a 2006 mustang can I use this engine to replace mine? And if so wat will I have to change? From what I can tell the Pulley system is definetly differenet so I guess I have to change the timing cover. Do they have the same bolt pattern?

 

yes you can use that engine. you may have to use a computer off an 04+ 4.6 with the same tranny as yours that way you have the drive by wire system to use as well. the issue would be the cam phasers(you can get lockouts) and i would get a truck manifold off an 09 f150 4.6 3v and you would have to change the wiring up a little bit and the tb(06 mustang has drive by wire, your truck has a throttle cable). thats all i can think of that will need to be done, others may know what else would need to be done.

it would be easier to just get a 4.6 2v or 5.4 2v and just get your computer tuned for it.

 

yeah then you have get tuned, and i doubt the exhaust manifolds are the same length. Id find an engine out of a truck, 99-03

 

^^^ what they said


if you are seriosuly considering the three valve swap read the thread on the three valve swap started by 01roush

 

The engine is a 2002 mustang engine not 06

 

Its a 02 mustang engine not a 06

 

You can do that without any problems except - First , check to see if the Stang is a PI engine, it should be . Regardless, a direct swap and it will run, but you won't have the torque the 4.6L truck engines have using a car intake.

IF the Mustang in non PI by chance, you can use the 97's intake and everything above on the 02 power plant. But yea, the Stang is most likely PI which is good, you would need a 4six PI truck manifold to get it right/perfect, - set up like a truck.

Then Dyno tune to dial her in when alls said and done. - It's worth it

 

jbrew is right. The engine will work with or without the truck manifold. The only difference (in performance)between the truck manifold and the car is the torque comes in at lower RPM with the truck intake. Good luck

 

The truck timing chain cover and valve covers will need to swapped over. No tuning required as far as I can see.
Edit: I'm not positive on the valve covers?? If the car engine has Romeo heads, 11 bolt? holes for the valve covers, then the same bolt pattern from the truck valve covers will be required.

 

Yea,- Romeo = 11 / Windsor = 14 - But, not sure why that would matter ? He has a complete 02 motor for the swap. Flexplates can be different as well -6 or 8 bolt, not sure if that will come into play?
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Tuning~

That's right, now that I think of it. - It's not a 5four swap (I get the two confused on the tuning end) - So it's a non PI to PI 4six swap.

I don't have the Mustang Specs in front of me, but I have your 97 and the 2002 4six specs up on the comp next to this one.

The truck motors(4.6L line) went PI (Power Improved) in 2001. While the jump in HP really isn't all that much, - In 01 they had a nice jump in torque where it counts most, down low.

Specs -

97 =

HP-------------220 @ 4750 RPM / Torque----------- 265 @ 4000 RPM

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02 =

HP-------------231 @ 4750 RPM / Torque------------293 @ 3500 RPM

A tune may not be warranted at this time, but if you add a few bolt ons like say Long tube headers, E-fans and a good "Air" intake, that will shoot your numbers up enough to warrant a tune to benefit the increase. You want to stay away from running lean, -this is what usually happens running the factory tune with allot of GOOD after market upgrades. Then again, since the PI engines went into production for the 1/2 tons (99 for the 5four/ 2001 for the 4six), - the factory set up benefited from after market canned tunes from the right tuner (XCAL or VMP to name a few).

Anyone know the spec numbers for the 02 4.6L on the Mustangs? That's what I would look for at this point. Also I would look for a Truck PI intake set up after confirming the new engine is PI (I think it is).

So you have a little homework Ultrabeast, but it's definitly doable

 

the mustang got pi heads in 99. i would agree with looking for a truck 4.6(01-03 and the 04 heritage) pi manifold but its not something that it needs unless you tow with it.

 

That's why I wanted to see the specs on the Stang. That car is quite a bit lighter isn't it? The truck will be slug without Torque - That might effect economy as well. I think torque plays a big roll in just getting around. I'm over 6000 empty, the last load I pulled I hit 12,990 - A record for me lol.

You know, I have the Stang Specs up on the service DVD, - They don't give yuh the damn numbers tho, just dimensions - what good is that lol.

I guess that's not important in service.

 

according to wikipedia(i know its not the best to go by) it says the 99-04 mustang 2v 4.6 had 260hp and 302lbft or torque stock. everywhere else has dyno charts with custom tunes and engine mods.

 

I wouldn't worry about changing the front cover on the mustang engine. Just install with the stock cover. The only concern there will be if you try using the truck A/C. P/S and alternator. The 97 truck had a wide belt the Mustang was always a narrow. Therefore you will have to install the narrow pullied A/C, P/S, and Alternator from a car. Not a big deal except recharging the A/C. If memory serves me the 99-04 Mustangs were 302 torque 260 hp. Had all the dyno spec sheets somewhere but in the basement in boxes...Flex plate is no big deal either 6 bolt or 8 thats only crank dependent. bolts to converter the same. There was talk at one time to just make all Mustang engines and install in all the vehicles trucks as well.. cost savings and commonization of parts. You won't have any problem with power.

 

Damn! That's got my 5four beat by 25 Horse .... - Well, not now, I'm probably pretty close to the same as far as hp, -but it did stock. The stock 98 1/2 ton w/ 5.4L = 235 hp / 335 trq .

Not the torque tho and where I have it