My boss and I are swapping a 727 to his 87 Dodge truck using a 97 360 engine complete with EFI. He wants to use the F-body code to start off with (AUJP) as he is a little scared of the timing and stuff. He knows we can graft the timing table but he just wants to start off with the whole F-body MEMCAL. So my question is this: on the accesories, are they going to be the same output on the 727 pins as the output on the 730 pins? I know the major stuff will be the same: tps, O2, injectors, EST. But the little things like egr and purge, TCC. Will those be in the same place on the pins or will the PROM change them? As an example, can I count on the 727 still putting out the TCC on the same pin as it did using the ANHT as the AUJP?

 

Not sure what you mean.
The 727/730 can share memcals, but the connectors are entirely different. The 727 are weather resistant.

 

Exactly, the connectors are different. What I mean to ask is this, he has TCC coming out of connector B pin 7 (727 has 4 conn.), while the 730 has it from F6 (only 3 conn.). He wants to run AUJP instead of ANHT in the 727 so will the TCC still come from B7 or will it come from another pin on the 727? There are other things too, like EGR and purge and also ins for 4th gear and stuff. I know the main things will be the same, the things that are needed to run the engine, but will the accessories be the same?

 

It has to come from a different pin as they are sq. (4 of them) and are numbered different. What you need is a wiring diagram for a 7727 then you will know what each pin does.

 

I have a wiring diagram for both ECM's and I have both ecm's physically in my hand. My question involves taking a PROM from a 730 and running it in a 727. Like the example before, the TCC on the 727 using the ANHT bin produces a TCC signal at B7 while a 730 using the AUJP bin produces a signal at F6. If I take the AUJP bin and run it in a 727 will the TCC still be at B7 or on another pin? The two ecm's have identical PCB's, but since the same ecm (730 as an example) can use the same pin to run the EGR solenoid *or* the AC clutch realy just by using a different application (V6 vs V8) PROM, can a different PROM being run in a 727 (AUJP vs ANHT) produce different pin outputs although they are the same mask being run in two different ecm's? I know that the 727 with the ANHT does all sorts of stuff like AC enable and fan enable and other things that the AUJP doesn't do with the 730 and I assume that it won't do those things when I change it. But, will it do the things that they have in common (TCC, EGR, etc) and at the same pins? Thats my question.

originally I asked this:
So my question is this: on the accesories, are they going to be the same output on the 727 pins as the output on the 730 pins?

What I should have said is: are they going to be the same outputs on the 727 using the ANHT bin as using the AUJP bin? Sorry for any confusion. As you can already tell, I am more than confused for all of us here.

 

You can run the AUJP on the 727 and the outputs will be fine.

The pins are controlled by the hardware, not the software. I know guys who have ran the AUJP on Vettes and Vette Memcals on F-bodies.

The only issue is you will no longer have any oil temp readings as the AUJP doesn't support that.

 

Thanks Glenn, it's just that since the V6 and V8 use the same ecm but have different putputs for things like EGR and stuff. Like on the V6 with the three EGR solenoids. Those outputs are other outputs with the V8 calibration so I would suspect the software does have some control of the hardware.

And the oil temp thing is a non issue since this is a Dodge 360 we're working with. We just want to use the MEMCAL with AUJP since he feels that if anything were to happen with the PROM burning stuff he could just take out the adapter and run the AUJP MEMCAL as opposed to running from the NETRES. I think it's a pretty smart move and we can burn what ever bin to start with on the adapter anyhow.