Holley 670 SA tuning with wideband

Thanks for the responses. I tune for performance and not milage and SOP is just as important as the numbers. My initial ignition and total has been tuned before messing with the carb. It wants as much as 23 initial, it doesn't kick back and I have locked the total to 35. I could probably go even more on the initial.

Primary jet - 65
Secondary - 68

Pump nozzle - went from 31 to 28 today. Got better numbers but could not really tell any difference in performance.

Problems I have ran into while tuning
- It's hard to get it to idle decent (it's to low) without messing up the transition from idle to part throttle by turning the curb idle screw to much. It now has a crisp response but idles like 600 rpm and is very loopey with the big cam.

- At WOT it takes off hard and then has a slight hesitation and then it takes of again and when it shift to 2 gear it chirps the tires. I have the heavy brown spring in the secondary vacuum right now, only black is heavier. Is it the pump shoot that kills it by draining the engine? Could I have gone to lean on the idle mixture? Wrong spring? I guess I just have to keep tuning. Enough for today though.

Any suggestions on these problems?