4.6L and ECU swap, have some questions and need some help

[mustangmike6996]

I am rounding up parts and info for my new project. I hate buying things then changing the direction of a project due to unforeseen obstacles. So im trying to get all of my ducks in a row right now before i start...

I have a 51 F1 that is getting a 99 cobra 4.6 DOHC swapped in. I have the entire engine (disassembled) from intake to oil pan, accessories to flywheel. I do not have the engine wiring harness yet. It will be a manual trans with minimal other electronics...

I see it as having two main routes:

Carbed, intake will be expensive and carb wont be too cheap either but it would be rather easy. I would have to get a system to drive the coils for spark tho

or stay with fuel injection (which is what i would prefer to do) I can find ECUs and wiring harnesses on ebay/CL etc. and graft the harness to fit the truck where and how i need it or i can go with a Ron Francis prebuilt harness ($860) and have my ECU reflashed to eliminate the PATS ($350)

does anyone else know of any better lower cost options?

 

[mad1stgen]

Use 97-98 Mark VIII ECU and engine harness. Have an SCT dealer burn a chip to switch off all the auto trans functions, as well as PATS, and most of the emission stuff. Easy peasy and no cobra tax.

 

[mustangmike6996]

im working on an 01 ECU for 150 bucks.. not too bad considering they are all asking 400 or so.


I didnt know they could do the PATS with the SCT stuff.

What would you guys recommend running for an ignition switch?

 

[svtserpent]

I bet you could get an engine & body harness from Nasty89Notch. He's got all sorts of mustang stuff for sale.
I think it would be pretty cool to have an obd2 port under the dash on a 50 year old truck. Also beaing able to read codes would be nice.

 

[mustangmike6996]

I bet you could get an engine & body harness from Nasty89Notch. He's got all sorts of mustang stuff for sale.
I think it would be pretty cool to have an obd2 port under the dash on a 50 year old truck. Also beaing able to read codes would be nice.

yea, thats what i was thinking. I am not sure how much work it would be to get a body harness incorporated to work in there for the bare bone no options the truck has. a good schematic and some time, i can figure out what i could "trim out of the picture"

 

[svtserpent]

A few years ago a guy on ebay had some cool dohc 4.6 5.4 sheet metal carburetor manifolds. One of them was three 2brl carbs. I think the price was around 500 bucks.

 

[slideways]

I have a ecu and harness out of a 2000 gt 5 speed car that was tuned at alternative if you are interested andbit would work for you shoot me a pm. I know there are a few changes that need to be made tobthe engine harness but frombwhatbi gathered it was primarly extending a few plugs.

 

[mustangmike6996]

pm sent

 

[derbydad276]

my cousin is going to buy one of this guys kits (intake and programed msd box)
http://www.youtube.com/watch?v=I6GsdtUZVZs

 

[sleeper32vgt]

I'm about to pull a fast classic efi sequential off a 4.6 dohc. Has a base tune that will start the motor. Pm me.

Sent from my DROID RAZR using Tapatalk 2

 

[mustangmike6996]

for the people who have used a stock computer and wiring harness, what did you need to have the OBDII Data link connector? would i have to get a dash harness and disect it keeping just the DLC?