: You're right; the mid 80's batch fire set-ups
: are getting hard to find in the pick-a-part
: yards. These yards like to crush the old
: cars and get newer ones as soon as possible.
: That's where they make the most money.
: The good news is that I'm quite sure you can
: use some of these newer sequential set-ups
: as batch fire systems in a SL6 with a
: distributor. I think you can do this, even
: though they are sequential, because I
: believe they will default to batch fire with
: the lack of a cam sensor signal. I want to
: emphasize that I haven't completely verified
: this yet. I do plan on getting one of these
: ECMs and trying it when the good weather
: returns.
: What I do know is that when I substituted the
: sequential ECM from a turbo Regal for my
: batch fire ECM, it run well except under
: heavy acceleration. The turbo ECM expected
: to see higher flowing injectors than I now
: have, so I think that was probably the
: problem. I'm speculating that ECM provided a
: pulse width to the injectors (based on the
: MAF signal) that would have supplied enough
: fuel with the larger injectors, but not
: enough with my smaller injectors.
: Bob D

: I found the following web page , which you may
: have seen already. These position sensors
: don't appear to be as complicated as I had
: once imagined. It may be possible to use the
: distributor as a means of cam position
: sensing, particularly if one were willing to
: use a GM ignition module(eliminating
: centrifugal advance) and putting the sensor
: in the space the centrifugal advance
: mechanism now occupies. It's just a thought
: , perhaps a very weird thought, but I'm
: trying to think "out of the box"
: as they say.

: serv. no. 1228253
: I'll take any info you can get.
: -qwimby

:
: Sorry, I couldn't find any information on that
: ECM. Because of the 8XXX ending my guess is
: that it's from 1989 or the early 90's.
: Bob D