747 Timing Calc

[Brent]

I assume that I did the calculation correctly.  I really wasn't sure whether
to include the "ALDL/CL adv " or not.

Amazing yes and confusing.  I don't understand why it only needs 13d @
3200rpm WOT.   I thought the older iron heads had a slow burn rate as
compared to newer alum heads and required more WOT timing...

Seems to indicate the mixture is burning very rapidly or end combustion is
taking place in the exh manifolds.    Thoughts?

Regards,
Brent
---- Original Message -----
>
> Amazing isn't it?
>
> BobR.
>
> Brent wrote:
>
> > I'm having trouble figuring out how the 7747 calculates timing.  This
stock
> > bin is for a '91 Chevy C2500, 350, auto, 3.73.
> > http://www.paonline.com/WildKat/arjt000.bin
> >
> > Lets run the engine at 3200RPM, PE mode, 100KPA, 75d C coolant temp.
I'll
> > assume there is no knock retard.  I used WinBin to find the values.



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