Thanks dave. I have seen the thread you linked. with the 7747 I started with the vortec bin you posted and changed the timing table to fit my motor, I had it running without knocks. So when I swapped over to this computer I copied the timing table and VE for the starting point. Just wondering about these what I want to call false knocks since there is no timing removed.
I just ordered a standard ks6 knock sensor will have it tuesday.
Here is my SA table right now. I started in wot high kpa in the 30-32 range and have slowly brought it down from knock. I could run 30 degrees around 3400-3600 on the 7747 but seem to get knocks with this 7427. vortec_sa.PNG