EEC III CFI to gt40 SEFI

[Tempentry]

Hey guys, so im in the middle of a rather large project; im converting my 83 Lincoln MKVI (non-roller lopo 5.0, CFI, EECIII) to SEFI with the explorer top end. Basically switch top end to fuel injection and EECIV, but keep the lopo ecu and (my original, flat tappet) cam. Eventually ill go maf and full roller, then i figure ill nab a cam with the valve train upgrade.

She is my daily driver, im not trying to sacrifice drivability for speed (my eeciii cfi is gutless), just want a little more power on long grades. Yes emissions are required

Heres what ive got so far
-gt40 heads from 96 exploder
-gt40 intakes upper and lower
-explorer fuel rail and orange (slim) injectors
-explorer tb and egr set up
-84 towncar dizzy with tfi (eeciv but works with flat tappet cam)

Im working on pulling a complete harness off an 87 Towny (already have the fuel injector portion removed), but im not sure what all i really need (sensors, solenoids, relays) and what is just part of the vehicle (ext lights wiring, oil pressure, ect).

-How exactly will the gt40 intake and tb work with cruise, throttle, and the tv rod? Will i need all the brackets and cables, my cfi stuff definitely wont reach.

-Is there anything else i should rip from the Lincoln, aside from the ecu and harnesses?

Thanks for all the help guys ive been racking my brain the past while trying to line everything up

[pantera77]

Get the tv cable and linkage, and the throttle cable assembly from the donor. You'll need all the brackets and everything.

If your running a lopo computer, you'll need 14# injectors. I strongly question how the lopo comp will work with the cfi cam and gt40 heads and intake.
You need a 86-91 panther EGR spacer bored out, or a lighting spacer, or some fab work to make a mustang one work
IIRC explorer fuel rails have the inlet and outlet in weird potions, but since you'll be making custom fuel lines it doesn't matter anyways as long as it clears everything.

I'd honestly just grab a whole explorer engine and drop it in, be way easier in the long run. I mean, your literally just a cam away from an engine worth actually having.

Grab a EVTM for the 87 and 84, will make mating the body and engine harness infinitely easier then tracing wires all day, been there, done that.

[gadget73]

Its not possible to drive that fuel injection system with the stock ECM. There are not enough injector drivers, nor is the ECM programmable to deal with the very different set of sensors and actuators that come with that package. You'll spend a lot more time and effort half-assing it than just doing it right the first time, and the results will be much better as well.

Honestly, I'd ditch the entire engine and ECM, and swap the Explorer one whole cloth in there. Its a far better engine to begin with. Swap the ECM to something more modern as well, that system was abandoned in 1983 for a good reason. An Explorer motor (with an HO or better cam, the Explorer cam sorta sucks) will run OK with a stock mass air ECM, but it does benefit from some tuning. I ran an Explorer cam for years. I can tell you it runs out of power by about 4500 rpm, and its not amazing on fuel either. The HO stick will perform better, and there are better options from there too. I'm quite happy with my XE-258. I was running that on an un-tuned mass air ECM with stock injectors for a while and had no drivability concerns at all. its better with the 24# injectors and some tuning to make it play nicely together, but it certainly wasn't a must-do upgrade. I drove it for well over a year before doing any tuning.

I don't say any of this stuff to discourage you, I just don't want to see you frustrated when it doesn't work as expected. Collectively between the various members here, we've done just about every common mix of stuff you can imagine, and after a while it gets to be fairly well known what does and does not work.

If you get stuck for having the throttle body bored out, I can probably help you out, but I won't guarantee a lopo one can be bored out enough to work with the Explorer intake and 65mm throttle body. They can definitely be bored out to mate with the 60mm throttle body. I've done that job. I didn't take measurements, but eyeballing it, I don't think there is enough material there to hog it much bigger.

[Tempentry]

Haha i know its a crazy idea, just stacking and mixing all sorts of shit!

All the brackets and cables from the explorer will fit on the Lincoln? What about cruise, the ecu will be from an 87 tc, matching the 83 cruise right, will the explorer/gt40 intake throttle stuff just fit right in?

Well if i go full roller the block will basically be an explorer engine right? Ill need an HO ECU at that point? What am i looking at price wise for the cam, lifters, pushrods, etc (everything needed to go full roller and cam)? Cam/kit suggestion? 500 or so isnt neccesarily out of my budget

[Tempentry]

Its not possible to drive that fuel injection system with the stock ECM. There are not enough injector drivers, nor is the ECM programmable to deal with the very different set of sensors and actuators that come with that package. You'll spend a lot more time and effort half-assing it than just doing it right the first time, and the results will be much better as well.

Honestly, I'd ditch the entire engine and ECM, and swap the Explorer one whole cloth in there. Its a far better engine to begin with. Swap the ECM to something more modern as well, that system was abandoned in 1983 for a good reason. An Explorer motor (with an HO or better cam, the Explorer cam sorta sucks) will run OK with a stock mass air ECM, but it does benefit from some tuning. I ran an Explorer cam for years. I can tell you it runs out of power by about 4500 rpm, and its not amazing on fuel either. The HO stick will perform better, and there are better options from there too. I'm quite happy with my XE-258. I was running that on an un-tuned mass air ECM with stock injectors for a while and had no drivability concerns at all. its better with the 24# injectors and some tuning to make it play nicely together, but it certainly wasn't a must-do upgrade. I drove it for well over a year before doing any tuning.

I don't say any of this stuff to discourage you, I just don't want to see you frustrated when it doesn't work as expected. Collectively between the various members here, we've done just about every common mix of stuff you can imagine, and after a while it gets to be fairly well known what does and does not work.

If you get stuck for having the throttle body bored out, I can probably help you out, but I won't guarantee a lopo one can be bored out enough to work with the Explorer intake and 65mm throttle body. They can definitely be bored out to mate with the 60mm throttle body. I've done that job. I didn't take measurements, but eyeballing it, I don't think there is enough material there to hog it much bigger.

Yeah EECIII sucks, i essentially wanted a eeciii to eeciv conversion, then do a cfi to sefi, then go with the gt40 top end. If the stock 83 flat tappet cam will absolutely screw with the rest of the set up, then i can hold out for the roller conversion. At that point id basically have an explorer long block running eeciv? MAF upgrade later and ill be set.

When you say untuned mass air ecu you mean an eeciv ecu? Or aftermarket? Could i run the full gt40 set up with stock 87 tc ecu? Do i need a mass HO ecu?

Im not sure i understand the last part, if i have the entire explorer set what lopo tb will i have to use?

[pantera77]

You'll use the explorer TB.

A standard SD HO computer will work depending on cam choice, but it's not hard to add the 4 wires and do a mass air swap. It opens up a bit more mod potential.

Don't do a roller conversion, just find a nice roller block to start from. That's what I did

[gadget73]

EEC IV mass air ECM is what I was running. It ran horribly lean with a speed density HO ECM. The non-HO EEC-IV ecm is most useful as a door stop. It won't drive larger injectors, and it will run lean to the point of melting pistons. I'd go straight for mass air, mine pinged horribly when it was running a Mark VII ECM. The fix was the A9L mass air setup I've had for years now.

Usually you use the panther accessory brackets on the Explorer long block. Strip all the nonsense off the Explorer motor, swap the stock stuff on. The engine block itself is the same under all that trim.

The EGR spacer from an 86-91 is the part that is usually used since the throttle cable will bolt up to it. The 93-95 Lighting part is the ultimate magic part since its the right size for the Explorer throttle body and has the proper cable mounts on it, but they are not exactly common. That leaves you with boring out a stock EGR spacer, or using one from a Mustang and having brackets made so your throttle cable has something to bolt to. You also need the throttle lever off the non-HO throttle body to swap onto the Explorer one. The cables have nowhere to go on the Explorer piece. Its also a simple swap.

[Tiggie]

Listen to the guys above.

My only piece to add to this is about emissions. What does your locality require? You'll pass the tailpipe sniffer better than before but your visual check may get some people confused if they actually know what they are doing. You are usually okay going from older to newer but check first! If this is your daily driver, you don't want to kill it simply because it won't pass emissions.

[86VickyLX]

Interested in buying an A9P computer?

[knucklehead0202]

Interested in buying an A9P computer?

If it's a MAF computer i'd buy it if the price is right.

[Giraffe]

If it's a MAF computer i'd buy it if the price is right.

That is the Mustang computer for auto cars equipped with MAF, yes.

[Grand Marquis GT]

I wish you the best of luck, from one EEC-III bro to another.

Save that MAP sensor from your car. It's worth money!

[Tempentry]

Well thanks for all the help and information guys.

So if i buy a 65mm mustang HO TB it will fit right on the gt40 upper and then i can use fox HO throttle and tv cables right, but will i lose cruise? My Mark has the old ball style set up, not sure about the stangs.

I dont have the space to remove and store a complete motor, thats the biggest reason i rather not swap to a full exploder long block. But i did some research and found a great bunch of aftermarket flat tappet cams for cheap, with WAAAY better specs than the stock stick. Im thinking this one will work nicely with a stang MAF ecu, uses the 351/HO firing order, similar specs to ho stick-

http://www.lunatipower.com/Product.aspx?id=2242&gid=258

I rarely go over 4k, usually im coasting around 25 or less with the stock aod and gearing. What kinda specs do you think would be appropriate? Honestly it doesnt really seem like i need a roller for that range. Im sure itll be nicer all the way around, but more expensive for sure. I can probably get that cam with new lifters and springs for <250

[87gtVIC]

I have lightning egr spacers and 65mm throttle bodies with proper panther linkage installed for grabs if you go that route. In all honesty I have a HO cam that came in my rebuilt block as well as a good known working a9p computer.

[sly]

If he installs the HO roller cam, he'll have to get dogbones, dogbone retainer spider, drill/tap the valley for the spider, and roller lifters as well as a new dizzy with a steel gear (or replace the gear on his with a steel one). I think a decent flat tappet cam would be fine for his uses.

As for cruise, as long as you can get the cable hooked up somehow, it should work since the control module is separate from the ECM. The only years that need to dick with rewiring the cruise are 88-91 IIRC. You should be able to change the cable on your cruise servo if needed.