727 questions.

[Bruce Plecan]

-----Original Message-----
From: Doug Mansfield <mansfield at cns.ohiou.edu>
To: Do-it-Yourself Fuel Injection Mailing List
<diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, February 09, 1999 1:08 PM
Subject: 727 questions.


>I would like to use a GM 727 for a custom project but hope someone may be
>able to answer some questions.
>
>The 727 is just an underhood version of the 730, right?  So I should be
>able to get the MEMCAL from a 730 (four cylinder) and place into the 727?

Yep.
>
>If I do the previous, how many ref pulses per revolution will the ECM
>expect to see?  Is it one pulse per rev, or is it one pulse as each
>cylinder passes TDC, or 2 pulses per rev (for the four cylinder).

2 per revolution

 Also,
>must I use the ESP module to do the A/D conversion or is there a simple way
>to convert it to digital?  I will not be using it for spark control.

I have no idea what a ESP module is.
>
>Does it use IAC or a motor for idle control?

IAC is a stepper motor (gm).
>
>What pressure does the fuel pump run at?

TBI about 12, TPI about 38
>
>Does anyone have the addresses for the fuel tables?

They vary.  The location of the tables for a v-8 730 won't be the same
for a 4 cyl..
>
>It is MAP right?  I noticed a pinout that showed both MAP and MAF, what is
>that about?

730's have been used as either MAP, or MAF..
Bruce
>
>Thanks for any help.
>Doug Mansfield