Help. I am running a 426 HEIM in a 70 CHallenger and have a problem with serious stumble comming out of the hole after the car has been warmed up for about 30 mins. Runs great at highway speeds and durring the first 30 - 35 minutes. I have replaced my MSD6AL ignition and re-located it in front of the rad support to keep it cool, replaced the coil, checked for fuel delivery and I still have the problem. The only thing that I have not replaced is the distributor. Does anyone out there have experience with "fuel percolation" or any other ideas would be helpful. I am running a Stage V 2X4 intake and 2 X 650 Thunder Series Carbs. HELP ME !!

Dave