Need some PROM-tweaking halp...

[CSH-HQ]

>> Does anyone know what the TPS
>> voltage numbers should be on that
>> setup?  We see .66 v at idle and 4.08
>> at WOT... doesn't sound quite right...is it?

Mine always like .38-.45v
>
>Generally less than .9V at idle (.5 +/-.25)is what I look for, and
>greater than 4v at WOT.  4.08 seems low, but I wouldn't necessarily
>flag it as a problem.
>
>> 
>> Silly question:
>> What is the base timing supposed to be
>> for that?  There are no longer any stickers
>> under the hood of that truck.


>
>Base timing for which?  The originally non adjustable crankshaft
>sensored Vortec or the now removed 87 350 with completely different
>heads and manifold? ; ) Factory for the 87 was tdc.  You might set
>yours at 6 degrees and work from there.

6 is a really good number for a TBI SBC
Bruce
>
>> 
>> I'll get the stock chip dumped in the next day
>> or so.  Then I'll put it on that page, too.
>
>>Ron Gregory                        '91 Syclone #1452
>>rgregory at iname.com      Garland, TX
>
>Shannen
>