[Gmecm] Chevy 350 Carburated to TBI / TPI?

[Lukasz Warzecha]

Maybe this will help somehow:
http://www.usol.com/~okfoz/88/promcodes.htm

Regards

----- Original Message ----- 
From: "Jay Vessels" <jay at vessels-clan.com>
To: <gmecm at diy-efi.org>
Sent: Saturday, January 13, 2007 3:09 PM
Subject: Re: [Gmecm] Chevy 350 Carburated to TBI / TPI?


> Hi there!
>
> The advice was to change the MEM-CAL
>
> CAL is shorthand for MEM-CAL (or calibration, depending on who you ask). 
> Many people call them "chips".  It's the replaceable memory (EPROM) in the 
> ECM that for the TBI ECMs we're discussing is located behind a small 
> removable panel on the ECM.
>
> These parts are referenced by their "broadcast code" or BCC.  This is the 
> 3 or 4 letter designation given to identify a specific cal.
>
> Does anyone have a specific BCC in mind for a TBI 350/TH400?  It sounds 
> like there's one on the server, which you could just burn into an EPROM 
> (2732) yourself.  If you go this route, and need help, just let us know.
>
> Another choice is to try your GM dealer and buy a replacement cal for a 
> vehicle that is the closest to what you've got.  You'll need to do some 
> digging to find the right vehicle so you'll know what to ask for (i.e. 
> "1988 fullsize truck, 2WD 350V8 3-speed auto with Federal emissions" 
> That's just an example -- I don't know if that particular truck even 
> exists so don't use my example to try to buy anything).  A *good* GM 
> dealer parts counter will work with you on this a bit to help you find the 
> right part but you should go in there with a decent idea of what you're 
> after.
>
> Jay Vessels
> 1982 Chevrolet S-10 Sport, 2.8V6 TBI
> 1984 Chevrolet S-10 Blazer Sport, 2.8V6 (TBI pending)
>
> Aphelion79 wrote:
>> Oh okay so the 2bbl TBI was stock, that clears that up... :)  I figured 
>> the 4bbl was some fancy thing by Holly... thanks for all the information 
>> everyone, I'm still lost as to what a "CAL" is when I was asking about 
>> the Transmission earlier:
>>
>> "If you are going to use a TH400 transmission, you will want to find
>>
>> a wiring harness from a truck equipped with the TH400 and use a CAL from
>> a TH400. If you can't find the CAL, let me know and I can tell you
>> which one I used that I uploaded to the server several years ago."
>
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