[Gmecm] Vortec swap info needed

[tl34ru at yahoo.com (terry)]

the pcm will have to be flashed to manual trans if it
has not already been done, the vortec pcm doesn't
support the 400 trans.are you running a maf or is it 
speed density, is the engine light on, i believe data 
will tell the story
terry

--- Ne14RoxCJ <ne14roxcj@comcast.net> wrote:

> A friend of mine is having problems with his rock
> crawler. He built the
> buggy and put a Vortec 5.7l in it without any smog
> equipment, no AC, and a
> TH400 trans. Whoever he bought the engine and wiring
> from just hacked off
> the wires that weren't needed. I tried to hook up
> the Snap-on scanner only
> to find out that the data wires were also cut out of
> the DLC connector. The
> problems he is having is a lack of power. It idles
> great and in low range it
> crawl's fine (a geo engine would crawl great with
> the 4:1 t-case and 5.13
> gears). But when it gets revved a little, it starts
> cutting out. I know that
> we need to properly cap these un-used wires and I
> expect we will need to
> have the ECM flashed to get rid of the smog stuff
> and whatever else is not
> used. I haven't dealt with these later model systems
> yet, so can anyone tell
> me what else I'll need to do to make this a V-8
> again instead of the 4-cyl
> that it's acting like. I know that getting the DLC
> put back together and
> looking at the data is the first thing, but what
> else needs done if
> anything?
> 
>  
> 
> Thanks a lot in advance,
> 
> Beau
> 
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