88 TBI issue

[Eric Deslauriers]

Hi all,

New guy to the list here. I have a 93 5.7 Suburban & 88 5.7 fullsize
Blazer , both with TBI.

I recently transplanted a strong-running, carbbed  88 Police Caprice
roller cammed engine (had center bolt heads) into the Blazer , reusing
the Blazer's intake, TBI, etc.  & now am getting a pinging code. I tried
a set of police fuel injectors (whole pod in place of the Blazer's), but
performance was waaay worse, so I swapped back to the Blazer's.
Unfortunately, the cam specs are not known (GM has a page-long list of
meaningless #s to apply to this cam & Mitchell manual says it's one of
two). I believe I will have to get those to be successful.

When the truck is cold, it runs pretty nicely, but when warm, pings &
then the timing is retarded & performance lags. Beyond putting a
resistor across the temp lead, or disconnecting the EGR valve, I'm
trying to learn what I can do to make it run "right", hence my joining
this list.

I'm still trying to figure out what equipment I need to acquire to
modify my EPROM, especially on the fly if that exists. I have no
existing equipment other than a couple of laptops, so I need almost
everything (including EPROM burner, adapter cables to ALDL, etc.)

While I can code quite reasonably in C, C++ & Java, and am an assembly
hacker from way on back (Apple II days, so it's fuzzy, but Motorola
based), hardware is a definite weakness. Also, I am a car guy, with a
'69 SS el Camino that I have been "improving", so I should have a decent
portion of the required mix.

I'm all psyched up to go full tilt into this, so any help, URLs &
pointers are appreciated. I've already started @ the site and found lots
of things to confuse me. :-)

I'm doing this for the knowledge & challenge, not to fix some problem.
Like I told my friend - I can pay someone $600 to tune it, or spend
$1,000 learning how to do it. Which sounds like more fun? ;-)

Thanks,

Eric D.
88 K5 Blazer

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