Whats needed for a 5.0 swap?

STEVE_POE

coyote powered fr500s
Joined
Nov 5, 2008
Posts
2,309
Reaction score
3
Location
Cincinnati
Take it from someone who is doing it right now that trying to convert one into a street mustang is going to be a pita. There are more things that you guys are not even thinking about .

If you plan on running power steering you can forget about ac . your going to have to make custom heater box lines as well because they are not even close. Unless you don't care about heat or a defroster ?

Your going to have to add about 4" to your mid pipes to get it to mate up with the h/x pipe plus convert it from 2.5 to 2.75.

How do you plan to tap into you main body harness? That main body harness has a few things that are controlled from the 4.6 pcm amd engine harness that you no longer have because you need the ford racing harness and computer and that computer has nothing in it for activiating fuel pump modules and such.

Plan to spend about another $400 in pcv hoses and radiator hoses as well as they are totally different up front and don't come in your crate motor.

Your going to need to fabricate a power steering bracket and relocating all the power steering lines and resivor as well.


fuel system, plan to spend about $700 or so for an fittings, lines and a decent regulator.


and a few other things as well.

wait on a wrecked one ? you will be waiting for a while . If you can find them they are bringing big dollars. I've seen two sell. one for 14,500 and the other went for 16,500. so ? I know of a auto that is hurt and he wants 17k for it.

couple pics 5.0 in a 05/09 body That I'm building and this is a race car build so we could care less about certain electronics not working and a heater box.

393255098.jpg
 

Gray Ghost GT

Road Racing Fanatic!
Joined
Sep 29, 2009
Posts
1,269
Reaction score
14
Location
Madison, AL
The Cost / Benefit of trying to transplant a new 5.0 4V into a 05-09 Mustang for the street (not a dedicated race car) just doesn't make sense to me given the available 3V options.
 

Germeezy3

Senior Member
Joined
Jul 21, 2010
Posts
3,998
Reaction score
26
The Cost / Benefit of trying to transplant a new 5.0 4V into a 05-09 Mustang for the street (not a dedicated race car) just doesn't make sense to me given the available 3V options.

It seems like the thought is that the 5.0 would be a viable replacement motor for the 4.6 3V but from what has just been said that is not the case.
 

US-1

Banned
Joined
Apr 8, 2007
Posts
12,808
Reaction score
183
Location
The ShadowLands
Soooo.....since it's not as easy as you guys think......can I interest anyone in an aluminum big bore? :naughty1:
 

Matt D

S197 Pilot
Joined
Dec 31, 2008
Posts
5,819
Reaction score
39
Location
Toronto,Canada
Take it from someone who is doing it right now that trying to convert one into a street mustang is going to be a pita. There are more things that you guys are not even thinking about .

If you plan on running power steering you can forget about ac . your going to have to make custom heater box lines as well because they are not even close. Unless you don't care about heat or a defroster ?

Your going to have to add about 4" to your mid pipes to get it to mate up with the h/x pipe plus convert it from 2.5 to 2.75.

How do you plan to tap into you main body harness? That main body harness has a few things that are controlled from the 4.6 pcm amd engine harness that you no longer have because you need the ford racing harness and computer and that computer has nothing in it for activiating fuel pump modules and such.

Plan to spend about another $400 in pcv hoses and radiator hoses as well as they are totally different up front and don't come in your crate motor.

Your going to need to fabricate a power steering bracket and relocating all the power steering lines and resivor as well.


fuel system, plan to spend about $700 or so for an fittings, lines and a decent regulator.


and a few other things as well.

wait on a wrecked one ? you will be waiting for a while . If you can find them they are bringing big dollars. I've seen two sell. one for 14,500 and the other went for 16,500. so ? I know of a auto that is hurt and he wants 17k for it.

couple pics 5.0 in a 05/09 body That I'm building and this is a race car build so we could care less about certain electronics not working and a heater box.

393255098.jpg


Good to know, Thanks for the heads up.

The thing im not looking forward to is harness. Do you know off the top of your head what will be left out?
 

Chris06GT

Dragging LS A..
Joined
Sep 16, 2008
Posts
4,667
Reaction score
24
Location
Alabama
The Cost / Benefit of trying to transplant a new 5.0 4V into a 05-09 Mustang for the street (not a dedicated race car) just doesn't make sense to me given the available 3V options.

Depends what your definition of "street car" is?....

If you want to have a faster car, but want the luxury of a/c, heat, defrost, and less hassle, no it wouldn't be a good swap....

However, if you are crazy like Matt and I, then you don't care....roll the windows down, make some heater box hoses, heater hoses, throw in a full aftermarket fuel system setup, and let it fly!!!
 

Matt D

S197 Pilot
Joined
Dec 31, 2008
Posts
5,819
Reaction score
39
Location
Toronto,Canada
Depends what your definition of "street car" is?....

If you want to have a faster car, but want the luxury of a/c, heat, defrost, and less hassle, no it wouldn't be a good swap....

However, if you are crazy like Matt and I, then you don't care....roll the windows down, make some heater box hoses, heater hoses, throw in a full aftermarket fuel system setup, and let it fly!!!

:highfive:

I was going fuel cell anyways playa :party:
I will make the heater stuff work if I do keep all that in. The 5.0 is just worth it for moi
 

Matt D

S197 Pilot
Joined
Dec 31, 2008
Posts
5,819
Reaction score
39
Location
Toronto,Canada
It seems like the thought is that the 5.0 would be a viable replacement motor for the 4.6 3V but from what has just been said that is not the case.


It does suck it wasn't as easy as most of us thought. Dam you Ford :deadhorse:

Should be able to sell my 3 valve motor then lol...
 

Gray Ghost GT

Road Racing Fanatic!
Joined
Sep 29, 2009
Posts
1,269
Reaction score
14
Location
Madison, AL
You guys are "pioneers" and I give you lots of credit. It's guys like you that figure out how to make these types of challenging conversions "reasonable" in the form of kits with custom parts and easy to follow instructions. Good luck with your builds! Document, photograph and fabricate a complete kit so you can make some $$$$ for the pay off down the road.
 
Last edited:

Chris06GT

Dragging LS A..
Joined
Sep 16, 2008
Posts
4,667
Reaction score
24
Location
Alabama
:highfive:

I was going fuel cell anyways playa :party:
I will make the heater stuff work if I do keep all that in. The 5.0 is just worth it for moi

It does suck it wasn't as easy as most of us thought. Dam you Ford :deadhorse:

Should be able to sell my 3 valve motor then lol...

I had planned on cutting my spare tire compartment out, and running a custom built stainless tank that is sumped in the rear, and run all -an fittings......

And I am with you on selling the 3V...I have been adding all this stuff up and then subtracting the price of my stock 3V and then my stock 5-speed and equipment....

See, y'all just thought I had been out of the game.....I've just been lurking in the back row watching and listening....

Oh yeah, my car is now auto....muahahahahahaha!!!
 

STEVE_POE

coyote powered fr500s
Joined
Nov 5, 2008
Posts
2,309
Reaction score
3
Location
Cincinnati
Good to know, Thanks for the heads up.

The thing im not looking forward to is harness. Do you know off the top of your head what will be left out?


the biggest thing is fuel pump activation signal. The ford racing system has a dedicated fuel pump fuse and wire to activate the fuel pump . what I did was run this wire to the input side of the inertia switch . I tapped the ford racing harness activation into the key on power wire in the key cylinder . key on activates ford harness . I then just bypassed the module that way I still have the saftey of the inertia switch and not have to run the wire to the back

your also going to need to make your alternator harness longer as the main line for a 4.6 will not reach to the location of the 5.0 down low on the driver side.
 
Last edited:

STEVE_POE

coyote powered fr500s
Joined
Nov 5, 2008
Posts
2,309
Reaction score
3
Location
Cincinnati
the other thing your going to need is gauges for everything as your cluster is worthless and most your warning lights will be on . all that info comes from your pcm

we run a mychron unit and the ford racing harness has a port on it so you can tap the can cport and get real time ino .
 

Germeezy3

Senior Member
Joined
Jul 21, 2010
Posts
3,998
Reaction score
26
the other thing your going to need is gauges for everything as your cluster is worthless and most your warning lights will be on . all that info comes from your pcm

we run a mychron unit and the ford racing harness has a port on it so you can tap the can cport and get real time ino .

Are you serious? Why would Ford bring out a motor and not consider its backward compatibility. Are they planning on making the 3V forever?
 

US-1

Banned
Joined
Apr 8, 2007
Posts
12,808
Reaction score
183
Location
The ShadowLands
Are you serious? Why would Ford bring out a motor and not consider its backward compatibility. Are they planning on making the 3V forever?

No, they are not. In fact, all the original modular engine molds and castings have been trashed. What we have in the pipeline is all we have. Period.
 

STEVE_POE

coyote powered fr500s
Joined
Nov 5, 2008
Posts
2,309
Reaction score
3
Location
Cincinnati
Are you serious? Why would Ford bring out a motor and not consider its backward compatibility. Are they planning on making the 3V forever?

it's a totally new system over what you have. Keep in mind your cluster is getting it's info from the 4.6 pcm and the harness on the engine that you have just pulled out. the ford racing system has the info in it but it has no way to send that info to the stock cluster . The harness was made for a street rod application not transplant a 5.0 in a 4.6 .
 

Latest posts

Support us!

Support Us - Become A Supporting Member Today!

Click Here For Details

Back
Top