350 roadmaster ecm / 7747 ecm

[CSH-HQ]

>but the bug bit and I spend the last month putting a 96 LT4 cam and the
>Holley TBI (base) w/ the org. GM tower and injectors.  It *runs* well,
>but the idle needs raised, the exhaust smells rich (BL=~109) , and and
>the gas mileage is not so good (13-14mpg highway).  I bought a Needham's
>PB10 and looked at the code. I found one table but little seems similar
>to 7747 specs (it's a 16136965) so I bought a 7747 out of an 87 astro w/
>4.3l (couldn't get a V8 at this yard, yesterday).  I need to know if
>there is anything to know or do when using this V6 calibrated ECM this
>w/ the V8.  Any info on the 16136965 would be appreciated as the there
>is no provision for the A.I.R.(not so concerned) and fuel vapor canistor

The 6965 has a run lean cruise mode to it, and is a nice ecm, stock, but I 
don't know of a crack of it any where.
747 is cracked at the ecmguys page.  but I don't have the url.
Read programming 101, it might help ya some.
with the 747 you also lose the IAT.
If ya hac the 6965 you have a nice car, but the total hac of the 747 saves 
alot of work.  In the archives uncder map/tables, I printed some tables that 
worked for my cammed 747
Bruce
>
>(envisioning my ABS gastank collapsing) w/ the 7747.   Any positive
>commentary would be appreciated in general.  Thanks.
>
>Brent Obermiller
>
>P.S. I'm really enjoying the turbo fiero info and NOW I wish I hadn't
>sold my Z24. :)
>
>Also, does anyone whether the lm3914 bar graph circuit can be hooked in
>parallel to the existing o2 sensor or do I need a second one near-by?
>