Never officially fixed my issue. I tried a higher volume Carter pump from Summit or Jegs. It has still done it a time or two. I still believe it is a volume and launch issue. Qjets have a wall and restriction back around the secondary needles that I am looking at modifying to get more fuel back there… I thnk under hard acceleration, the car sits back forcing the float upward from fuel slosh. It takes a couple seconds for the float to fall back low enough to allow more fuel in. I think this could be part of the issue. But I really think it is fuel starvation for some reason.
My pump has 3 lines. Threaded line to the carb. One to charcoal canister and one return to tank if I remember correctly. I also run an inline filter between the carb and pump that is the diverter valve style. I capped off the diverter valve and it did not make a difference.
Testing WOT from a roll, no issues as low as 10MPH except tire slip :). WOT from a stop still occasionally sees the issue. It is frustrating when it happens. I also think I noticed it happens uphill worse than down but that may have been coincidence. I just don’t drive it that hard to remember when it happens now.