1982 mustang 2.3l to v8 swap questions!

[x1986chp]

Hopefully I posted this in the correct section.


Like the title says I just have a question or two! I'm going to be swapping my 2.3l 4cyl out with a efi 5.0 v8 preferably a 89-93 because of the mass air but I don't mind converting a non mass air year 86-88. So my question is what wiring will I need to make this work in a 82 mustang ( engine, body or dash)? The swap seems straight forward as far as needing 8.8, fuel lines, trans, cluster, etc.

I guess what I'm asking is will my 82 body, dash wiring work with a 86-93 motor? Obviously I know the engine bay harness will need to get changed and get a computer for mass air motor etc etc. Can't really find out that info or I'm just not looking in the right place.

Or if I buy a holly terminator x will this work with my stock 82 dash harness?

I also plan to buy a donor car so I'm not having to piece together fuel lines, fuel pump, rear end, trans, brake lines/booster, etc etc

[webestang]

Every guide I have read said you just need the engine/trans harness and that the body/dash wiring can be reused.

Here are 2....
https://lmr.com/products/Mustang-4-C...ersion-Foxbody

https://www.andersonfordmotorsport.c...-car-deserves/

[x1986chp]

Every guide I have read said you just need the engine/trans harness and that the body/dash wiring can be reused.

Here are 2....
https://lmr.com/products/Mustang-4-C...ersion-Foxbody

https://www.andersonfordmotorsport.c...-car-deserves/

But was that for a already fuel injected car?

[x1986chp]

Every guide I have read said you just need the engine/trans harness and that the body/dash wiring can be reused.

Here are 2....
https://lmr.com/products/Mustang-4-C...ersion-Foxbody

https://www.andersonfordmotorsport.c...-car-deserves/

I'm pretty sure both of these posts and everything I have read when swapping is from a already fuel injected car 86-93. Mine is a 82 and is carbureted and I'm not sure if the wiring behind the dash will work

[OX1]

This boards search engine kind of sucks, but if you go to advanced search in google, put the foureyepride main domain in and then what you want to search for. I searched for "1982 EFI SWAP" and these are the first two pages of what I thought were relevant threads.

http://vb.foureyedpride.com/showthre...rb-to-efi-swap
http://vb.foureyedpride.com/showthre...-gonna-have-to
http://vb.foureyedpride.com/showthre...-3-8L-efi-swap
http://vb.foureyedpride.com/showthre...Level-Question
http://vb.foureyedpride.com/showthre...in-my-82/page3
http://vb.foureyedpride.com/showthre...pump-questions
http://vb.foureyedpride.com/showthre...I-in-79-Zephyr
http://vb.foureyedpride.com/showthre...truction/page5

There are 100's of build threads also, many from 79 to 85, which were virtually all carbed.
Going to have to dig through a lot of old threads to get every answer, but 99% of it is there
"somewhere"

[OX1]

From one of the threads on dash wiring...... My LTD was about the same. Only thing I needed there was
adding wiring from LTD LX in dash tach. Really no other wires from EEC directly to dash guages setup

"side from a MIL ( check engine light ), I didn't have to add anything to my instrument cluster ( dashboard ) for the EFI conversion. I left all the factory car wiring pretty much untouched except where I needed to tap into KO12v and RUN12v. Unless you were going to integrate the 5.0 Mustang dash wiring into the F/Z dash wiring ( and why would you do that if you are keeping the factory dash and gauges ), I don't see the necessity.

Obviously, what you apparently did worked, but I don't know why you had to do as much wiring as you said. I guess I don't understand what you did that was so difficult as far as all the wiring is concerned ?

In my Zephyr, the majority of my dash wiring mods are just to accomodate the 6-gauge cluster from a SVO Mustang, but that wiring would have been necessary even had I left the car carbureted. Even so, the changes were minimal and not overly difficult. If I should ever choose to do so, I could easily return my car back to original with little to no sign of it ever having been fuel injected.

So far I have converted three of my cars to EFI and they have all fired on the first turn of the key and run GREAT ! My 65 Mustang, my 83 Capri RS ( R.I.P. ) and my Zephyr. I'll probably leave the Fairmont carbureted just to keep something "old school" around to tinker with."

[x1986chp]

Awesome. It's a love hate with wiring for me. I don't really understand it as far as reading diagrams but love doing it bc I'm ocd when it comes to making it look clean

[webestang]

Great stuff OX1...! I hope to swap my 85 2.3 to 5.0.