[nortonfan]

Hi guys!
I've recently acquired a donor engine/trans from an '89 Lincoln MkVII, which I would like to use for a hot rod application, in a '56, 1/2 ton P/U truck. Somewhere, I read that the 5.0 HO's installed in the Lincolns are somewhat different from those installed in the Mustangs/T-birds/Cougars, of similar vintage. Is this correct? If so, are the differences limited to the intake or heads or something along those lines?

I will also be taking the ECU and complete engine wiring harness from this car, and I'm hoping this will simplify the transition from the car to the truck. Am I making an incorrect assumption here?

Any comments or suggestions are welcome and I thank all for the valuable input.

Happy Holidays to all of you!

Norman C

 

[fast Ed]

By 1989, the 5.0 HO in the Mark VII (as long as it was an LSC) was the same longblock as in a Mustang. Only differences would be in the accessory drive, since the Mark used the older style alternator, and the wiring harness and EEC-IV module. But the Mk VII would still have been the older speed-density engine management system, rather than the MAF system used on the Mustang by 1989. There are some other oddities to the Mk VII EEC system, IIRC.

You may want to consider using just the engine itself from the Lincoln, and then getting the wiring, sensors, and EEC module from an 89 - 93 Mustang, to simplify things.


cheers
Ed N.

 

[nortonfan]

Thanks, Ed.

I do think (and I could be mistaken), however, looking at the upper intake, throttle body and MAF sensor that this engine is not a speed density, which is what is on my '85 F150. What is on the Lincoln 5.0 HO looks very similar (identical) to an engine I installed in an '74 MGB GT, taken from a '91 T-bird, which was a 5.0 HO. On said application, I used a carburetor instead of the EFI.

I could be wrong about the Lincoln 5.0 HO and will have to investigate further.

Thanks again!
Norman C

 

[MadMikeyL]

It doesn't take much to convert a speed density system to a MAF system. I don't know off hand exactly what you have to do, but I'm pretty sure you can use the speed density computer and run some wires to the maf and to certain pins on the computer, and it will read the maf. As far as the longblock goes, the lincoln and mustang longblocks are identical.

Mike

 

[nortonfan]

Thanks, Mike.

From what I've read on the subject of the 5.0 HO's, you guys are correct in saying the engines used in the various models are the same, and do mention the SD, Bank Fired and MAF SEFI differences. More difficult is to find a single, authoritative source which will state clearly and succinctly, what system is installed on the various models.

Cheers,
Norman C

 

[5.0 Chero]

Norton... Use the lincoln motor and use mustang mass air wiring and ecm. do not waste your time with pulling the lincoln wiring and puter. You can use the injector harness from the Lsc. My chero is running a 89 LSC motor in it.

 

[icantdrive55]

All I've seen on '89 MarkVII's is speed density. California might be different.

The stock speed density cam is supposedly better in a Mustang with faster ramps. Don't know if the Mark would be different.

 

[fast Ed]

Mark VII never got the MAF system, even in California. The early ones (up to 89 I think) also have the cruise control system amplifier built in as part of the EEC function ... so they are going to have a weird pinout probably.

As suggested, the Lincoln engine, with an 89 - 93 Mustang EEC system, is likely the best route to go.


cheers
Ed N.

 

[nortonfan]

OK, then, I'll take this information under advisement and start my search for a Mustang harness and ECU. Since this is a popular item, they're getting harder to find at reasonable prices. The A9L and other Mustang computers are costing over $100, used. Is it possible to use the computers from the 5.0 HO MA Tbirds/Cougars? I'm not lookig to build a dragster. Just clean running, good reliability and economy.

Thanks,
Norman C

 

[icantdrive55]

Get an A1 Cardone reman a9l and give them any junk core in return. 100 bucks and lifetime warranty. You can get a Mustang retrofit wiring harness from Ford Racing here --- http://store.summitracing.com/partd...MS-M-12071-C302&N=700+400070+115&autoview=sku

You could use a tbird harness with a matching computer or '94/'95 Mustang T4M0 but it's easier to use a new one. The a9l runs better than a tbird computer or '94/'95 Mustang.

 

[nortonfan]

Thanks guys! This IS very helpful information. I have several ECU's that I don't plan on using so I can send one back as a core for the A9L.

Cheers,
Norman C