I have a edelbrock 650 AVS carb, Air Gap intake, Lunati Voodoo cam specs 268/276 .489"/.504", 186 double humps, Accel billet distributor, M-22 trans with a 3.36 rear gear, and other bolt on's. My problem is if I start to engauge the clutch anywhere below 1,500 rpm I will get a pop through the carb and is very sluggish all around below 2,000 rpm. I have run my timing at 8* initial, 25 mechanical, and 10 vacuum. I have also tried 12*, 14*, and 16* initial with and without vacuum advance; and non got rid of the popping. I have the correct metering rod springs in the carb for my 9 hg idle vacuum (yellow) and have tried several other springs and accelerator pump combination's to see if it wants more or less fuel with no luck. Even though it is a moderate sized cam I am considering the Air Gap's long big runners to be hurting my fuel signal and air velocity at lower RPM's (below 2,000 rpm). I would be glad to swap to a performer I have laying around if it means gaining low end torque without a pop. It will be in a 3300 pound daily driver/ 1/4 mile thrasher. Sorry for the long post but I want to get as much information out as possible to narrow down the problem. Any help would be appreciated.