So the 5.0L and the 5.8L trucks started SD EFI and evolved to MAF EFI around '96. Did the 4.9L (300 L6) ever go MAF or did it just remain SD?

Assuming no, can a V8 MAF ECU be reprogrammed (I mean relatively easily, Quarterhorse module perhaps?) to run an L6?

I've got a '79 F250 with a 300 L6 and thought about a conversion.

Even crazier, I've got a '63 Falcon with 170 L6. The small sixes share the same firing order with the big sixes. Assuming that the 300 ECU does not control the distributor, it seems like an achievable project, after a custom intake is built. Performance Distributors does make an electronic distributor for the small sixes based on the GM HEI units and can be run alone or with an control module like the MSD 6AL. Don't know if that has any relation to control in regards to a Ford EEC. Ford discontinued the small sixes in '81 before EFI was a factory option.

If the ECU simply isn't attached to the distributor, what happens? If the distributor is a stand alone, will the ECU just ignore the lost connectivity and retain control over fuel distribution?

Too many ideas...not enough time.

 

You can do lots with efi and retrofitting.
With enough work and fabrication you can make it work.
Let me think about this some more.
I'm thinking that if the 300-6 distributor will fit in the 170 that's the hardest part.
If not, then did the 170/200 ever have a duraspark distributor... I think you can use that to trigger a remote mounted tfi module.
I'm thinking that if you used a speed density ecu instead of a maf, that it will run 6cyl just fine because he fuel is batch fire and only knows what the distributor is telling it.

Gotta think more. It's possible, just need to think it through.

 

I am pretty sure (98%) that the F150 and E150 in 1996 had the 4.9 MAF. But only in 1996.

 

Ford had some MAF 4.9L trucks starting in 1995 (Calibration Code 5-52R-R00). The EEC-IV PCM part number is F5TF 12A650-MA. One caveat, it is designed to run with an E4OD transmission. There may be others out there, but this is all I could find.

 

Apologies for the slow reply. Life is getting in the way of my hobbies...

The small sixes, specifically the 200 and 250's did run DuraSpark starting sometime in the 70's. The last of the small sixes was in the '81 (I believe). Ford did have a HSC L6 that was very loosely based on the small sixes, but practically nothing is transferable.

The 300 (4.9L) distro is not compatible to the small sixes, the entire architecture is different.

Classic Inlines carries DuraSpark I and II distro for the small sixes as well as the DUI distros from Performance Distrbutor. These have the coil within the cap and are capable of stand alone or MSD 6AL control.

I suppose a Duraspark II could fire a TFI coil. I can't think of any reason my not. What about the ingition does the Ford EEC actually control? Does it vary spark energy and timing?

I suppose the AODE MAF EEC alters timing and fuel in conjunction with the trans. If it loses control over the trans (as in running a T5) it should go to some "safe" mode shouldn't it. Then again, it's probably trying to control the gear shifting as well. If it lost trans control, I suppose it would prevent most anything other than idle.

The SD EEC is certainly a start. Being a batch fire, it's just firing all 6 injectors at the same time isn't it. It's not firing them independently in time with the intake strokes is it?

Thanks!

 

I have a '96 F150 4x4, 4.9. It is MAF and 5 speed.

 

I would think that you could use a duras park distributor to trigger a remote mounted tfi module. The distributor pickup itself isnt very different if any at all.

With batch fire it sprays 3 and 3. It's not all six at once. But even with sequential they are pretty much firing all injectors the same time once your above 3k rpm anyway. Sequential only helps on he very low end.