Jerry,
Tell Corey 'Thanks' for the F/A guidelines. After getting my spark map sorted out with Edelbrock I put my wide band back on and went out for some test runs with laptop in hand. Everything was good up into mid-range, but as I passed 4000 to 4500rpm at WOT I got some pretty severe exhaust 'pop'. With a new confidence level in the spark map I concentrated on the F/A indicator, and what I saw was mid-12's from 1800rpm up past 3500rpm, but then as it got into the peak power area the numbers went into the mid to high 13's, or maybe low 14's - not enough to trigger my "Lean" LED on the Edelbrock Handheld Calibrator (it was not truly Lean with a 14.7 reference point), but it was more lean than desired. I cranked in more fuel at the top end from 3000 to 7000 rpm (6000 rev limiter), and from 26" up to 31"MAP - ended up with 28% more pulse width at the top than it had before! It now pulls strong through the power band, and the torque is scary high :D I've not had it on an extended highway cruise, but in 4th at 45mph it's at cruise 2000rpm and it homes in on 14.5 to 14.8 F/A which is perfect for closed loop. I appreciate the help ;)
The Handheld Calibrator unit is a pretty powerful tool. Once the base maps are set up to your satisfaction if you're on a trip and cannot get 91octane, no corn fuel it is a very simple matter to do a 'Global Timing' adjustment and back out a couple of degrees across the board, or only at the top. Once you get back into better fuel you can simply back out the over-writing "correction" in the calibrator, returning to your base maps. Pretty sweet!!