stumble from start to 200 feet
My question is about a hesitation / stumble from the starting line to 200 feet on the track.
I have a 582 BBC, 15.1 compression, 12 degree profiler heads, HRE sheet metal intake, 2 -1150 holley carbs ( 9377 ). I had a single 1250 carb on this engine and the car ran fine--7.27 at 184 mph. I switched to the 2-1150 ( apd ) carbs and I have developed a stumble from the starting line to 200 foot on the track. I have tried 2 fuel systems. 1- a belt drive fuel pump with a bypass regulator. 2- a barry grant 400 pump with quick fuel regulators ( one to each carb). so I dont think the issue is with the fuel delivery.
I have tried raising the fuel level from 3.75 off the top of the bowl to 1,2 and 3 flats richer. the issue is still there.( now the issue is a rich condition after the burn out. The carb is back to one flat richer, fuel just trickling out of the site screw. my jets are 92 square in both carbs, the idle air bleed is .052, intermediate is .043 and the high speed is .029. I have a 2 speed power glide with a trans brake, the coverter stalls at 6700 rpm. I have not changed anything else on the combination, just the carbs. If you have any thoughts on this issue I thank you. Rick