Jeep 4.0 or more accurately a 4.6 STROKED 4.0 with Jeep injection hardware???

[RobertISaar]

it's possible. i don't have one around to verify it, but the 7427 is also a P6 unit, things changed a bit. the difference between TBI and MPFI don't bother me since that's fixed with a resistor if necessary, it's whether the NETRES/limphome chips are similar enough to that when not ion LH mode, they function as intended.

[JeepsAndGuns]

Sounds like it would probably be easyer to just find the correct memcal.

[jdarg]

If I was to swap to the gm ecm, I would need the factory VSS to still function, otherwise my spedometer will not work. So now I wonder what signal the vss sends out, if this signal is compatable with the gm ecm, and/or if it would work with a 5 volt feed? Otherwise I would need some way to feed it 8 volts.
This is only a problem for me, since I would be installing it in a factory vehicle. Wouldnt be a problem for the OP since its a conversion, and he can use a non factory vss.

I can confirm the stock "8v" VSS on a 91-95 YJ (and probably 97+ too) will work just fine with a GM ECM, feeding the VSS with the ECM's 5v b+ reference.

I did a TBI 350 swap into my 94 YJ several years ago, retaining the AX15 and 231, and run an 8746 w/ EBL. Speedo and ECM VSS show correctly for thousands of miles now. IIRC I had to tell the bin to use 8000 ppm instead of stock ~ 2000 GM uses for the ECM to show correct MPH in the datastream.

[JeepsAndGuns]

I can confirm the stock "8v" VSS on a 91-95 YJ (and probably 97+ too) will work just fine with a GM ECM, feeding the VSS with the ECM's 5v b+ reference.

I did a TBI 350 swap into my 94 YJ several years ago, retaining the AX15 and 231, and run an 8746 w/ EBL. Speedo and ECM VSS show correctly for thousands of miles now. IIRC I had to tell the bin to use 8000 ppm instead of stock ~ 2000 GM uses for the ECM to show correct MPH in the datastream.

Interesting. Thanks for the info!