2009 to 2005 engine swap

[Siddhi]

Hi,
I just recently picked up a 2005 GT and it did not have a motor it it. I found a wrecked 2009 GT that I took the engine, tranny, rear end and a few other parts from. I plan to put this in my 05. Is there anything special about putting the 09 in the 05? Can/should I use the computer from the 09 also? Or should I leave the 05 computer in place? I did save basically everything under the hood from the 09. I am just not sure what all needs to be replaced.

Thanks,
-Barry

 

[Tman]

I’m not positive on this but I would definitely think you would want the 09 Computer. I think in 08 they changed the tune and I believe a couple other minor differences.


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[Midlife Crises]

Not sure exactly when it changed but there was an intake manifold change in 09 or 10 and a tune with a little more power.

 

[Siddhi]

Ok thanks for the info. I plan to use the complete engine and tranny from the 09. I will also use the computer as well. Do you know if there is anything compatibility wise with the 09 computer and anything with the body or electronics?

 

[Dino Dino Bambino]

Hi,
I just recently picked up a 2005 GT and it did not have a motor it it. I found a wrecked 2009 GT that I took the engine, tranny, rear end and a few other parts from. I plan to put this in my 05. Is there anything special about putting the 09 in the 05? Can/should I use the computer from the 09 also? Or should I leave the 05 computer in place? I did save basically everything under the hood from the 09. I am just not sure what all needs to be replaced.

You can leave the 05 PCM in place as it'll have the correct VIN number and stock strategy tune. The 05 & 09 engines only have minor detail differences so you don't need to revise the tune.

1. The CMCVs are integrated into the intake manifold on the 09 and cannot be separated from it, unlike on the 05. However that doesn't affect how the engine runs.

2. The 09 will have the updated cylinder heads for the later style one-piece 12mm spark plugs. If your 09 engine didn't come with COPs, you'll need the later style brown units.

3. I believe there are slight differences between the engine harnesses of the 05 and the 09 so you may need the 09 harness.

4. The thermostat housing on the 09 engine is integrated into the coolant crossover in front of the intake manifold instead of being remote as it is in the 05. This means you only need two coolant hoses instead of six, thus simplifying the system. It also declutters the front driver's side of the engine bay.

 

[Siddhi]

Hi Dino,
Thanks for the detailed answer. That is what I was looking for. One question though. Number 3 above you said you believe I will need the 09 engine harness. This is the harness that goes from the engine to the fuse block on the passenger side of the engine bay correct? Will it plug in the same as the 05 under that fuse block? Do you think all I will need to do is just plug it in?

 

[Wild White Pony]

I think Dino has this spot on.
From my experience with the newer engine in my 06 GT, you probably will get in more trouble trying to put a 09 computer in that car then you want. The newer computer runs at a different processing speed than the 05-06, you will run into pin out problems even if you change the harness. The connector alone to the temperature sensors on the radiator will be different. I found they are even different between the 05-06.
I think just getting plugs and COPS should work, The 2010 engine is the one that changed the manifold.

 

[Dino Dino Bambino]

Hi Dino,
Thanks for the detailed answer. That is what I was looking for. One question though. Number 3 above you said you believe I will need the 09 engine harness. This is the harness that goes from the engine to the fuse block on the passenger side of the engine bay correct? Will it plug in the same as the 05 under that fuse block? Do you think all I will need to do is just plug it in?

Yes to all three.

The 2010 engine is the one that changed the manifold.

It changed for the 09-10 model years. Same also applies to the alternator (Denso instead of Motorcraft for 09-10).

 

[Siddhi]

Thx Wild White - So you are saying I will run into pin out issues even if I use the 09 harness. So does that mean the pin on the harness to different place on the plug going under the fuse block connector? Sorry I am a little confused on which pin outs I should be aware of. How would be the best way to figure out the pin outs so I do not mess something up when I plug everything in? Or would it be ok to plug it in and try to start it and see what complains and then run down those issues? Thoughts?

 

[Wild White Pony]

Thx Wild White - So you are saying I will run into pin out issues even if I use the 09 harness. So does that mean the pin on the harness to different place on the plug going under the fuse block connector? Sorry I am a little confused on which pin outs I should be aware of. How would be the best way to figure out the pin outs so I do not mess something up when I plug everything in? Or would it be ok to plug it in and try to start it and see what complains and then run down those issues? Thoughts?

It's been a number of years since I swapped my engine so I'm just recalling some things. I've done quite a bit of messing around back then to make all the changes both physical components and electrical. I always like the simple things, if it's easier to tune, I'd use my SCT Ford Racing software. If it's easier to buy a part I'd do that. I hate going down Rabbit holes and Tuning/Electrical are the worst.

I have the same 09 style engine in my 2006, it's an easy swap if you use the 2005 computer that came with the car and get some plugs and coils (as Dino Mentioned) Very easy cost effective.

If your looking to put in the 2009 computer and harness, you might make it work with some tuning, re-flashing with Ford IDS so your vin matches the car and you get through emissions, your strategy probably won't match up to the features in your car, you will need to hire a tuner$$$$ to work out the bugs.

Sum it up: If it were me I'd first leave the original computer in, drop in the 2009 engine, start it up and have fun. You shouldn't even need to hire a tuner.

 

[Siddhi]

Wild White - Thx for the advice! I will definitely plan to use the 05 computer and harness. I do have everything but the block anyway. I would much rather make it easier than more difficult.

One thing I am unclear on is which plugs and coils I will need. I have uploaded a pic of the ones on the 09 block. Are these what I need or are there different ones I need to buy? If I need to buy different ones can you let me know what to look for specifically?

As far as a tuner, I have HP Tuners already and have tuned a few cars/trucks to date. So I should be able to fix any issues I run across with the calibration as I go along. I have access to a few different resources I am sure can help me if I get stuck on something.

I plan to get the motor and transmission in this weekend. So hopefully everything goes well.

 

[BAD3VLV]

If its an 09 engine and harness, use the 09 computer.

 

[Wild White Pony]

Wild White - Thx for the advice! I will definitely plan to use the 05 computer and harness. I do have everything but the block anyway. I would much rather make it easier than more difficult.

One thing I am unclear on is which plugs and coils I will need. I have uploaded a pic of the ones on the 09 block. Are these what I need or are there different ones I need to buy? If I need to buy different ones can you let me know what to look for specifically?

As far as a tuner, I have HP Tuners already and have tuned a few cars/trucks to date. So I should be able to fix any issues I run across with the calibration as I go along. I have access to a few different resources I am sure can help me if I get stuck on something.

I plan to get the motor and transmission in this weekend. So hopefully everything goes well.

View attachment 81554

Hey Barry,
Attached pics are the Coils and the plugs I like to use. Send me a PM I have a spare set of Good OEM coils I used as backups, you look up what they are worth and give me half. I also have alot of used plugs that are perfect, I will send you 10 of them to get you going free. I use to change my plugs alot when testing on the dyno or track.
Don't use aftermarket coils, OEM only way to go. Also the plugs I'll give you are gaped real tight to like 20 due to the boost I ran. You will need to gap them back to stock.

 

[bwilder10h]

I just went through this... putting a 2010 engine in my 07. Use the ECU and wiring harness from the 2007 to make your life easy. The only changes are the alternator power wire, which is very easy to enlarge the connector with a drill to fit the newer (larger) pole and the actuator plug on the back of the intake is different but the connector on the harness side is the same so it's a plug and play swap.

 

[Siddhi]

Good to know bwilder. Thanks for the info.

 

[Monkeyporn]

View attachment 81572 I just went through this... putting a 2010 engine in my 07. Use the ECU and wiring harness from the 2007 to make your life easy. The only changes are the alternator power wire, which is very easy to enlarge the connector with a drill to fit the newer (larger) pole and the actuator plug on the back of the intake is different but the connector on the harness side is the same so it's a plug and play swap.

I'd very much like to do this someday to my 07gt but right now I have no reason to my engine runs fine. I'd like to but I keep hearing my grandpa in my head "If it isn't broke don't fix it" he use to say that all the time. Mines only got 133,000 on it so I figure I can squeeze a few more mile out of the ole girl.

 

[Dino Dino Bambino]

I'd very much like to do this someday to my 07gt but right now I have no reason to my engine runs fine. I'd like to but I keep hearing my grandpa in my head "If it isn't broke don't fix it" he use to say that all the time. Mines only got 133,000 on it so I figure I can squeeze a few more mile out of the ole girl.

You could buy a decent used engine, tear it down, gradually rebuild it with upgraded parts over the course of a few months as your budget allows, drop it into your car when it's complete, and either keep your original engine as a spare or sell it to recoup some cash.

 

[bwilder10h]

I'd very much like to do this someday to my 07gt but right now I have no reason to my engine runs fine. I'd like to but I keep hearing my grandpa in my head "If it isn't broke don't fix it" he use to say that all the time. Mines only got 133,000 on it so I figure I can squeeze a few more mile out of the ole girl.

Understand. I only did the swap out of necessity. I bought the car with the engine blown. Previous owner tried to install cams and dropped the valves on #5 cyl into the piston and didn't realize it until he started it. Not good... block had a hole in it... some folks need to stay away from youtube mechanics.

 

[Monkeyporn]

You could buy a decent used engine, tear it down, gradually rebuild it with upgraded parts over the course of a few months as your budget allows, drop it into your car when it's complete, and either keep your original engine as a spare or sell it to recoup some cash.

YEAH that be one way to go Dino. I've always wondered if it is better to do a 5.0 Coyote swap or to swap the 4.6 for a bullet engine with the harden internals?

 

[Dino Dino Bambino]

YEAH that be one way to go Dino. I've always wondered if it is better to do a 5.0 Coyote swap or to swap the 4.6 for a bullet engine with the harden internals?

While I applaud anyone who successfully completes a Coyote swap into an 05-09 Mustang, all but a small minority are swapping in used engines and that's always a bit of a gamble that could backfire if the engine turns out to be problematic.
Building up a 3V avoids the complexities of a Coyote swap and you'd effectively have a brand new bulletproofed engine that you can boost to your heart's content.