I was wanting to see if anyone had a similar set-up to see where your carb adjustments were or if anyone had some ball park ideas. The problem is when nailing the gas from a dead stop or rolling and nailing it dips off for about a second and then she's gone. Just a 1 sec of drop off hesitation. It is a 69 Chevelle 496 bbc turbo 400 with 4.10 gears. The motor was dynoed before it was put in the car at 648 hp and all adjustments were made. there was an issue with the carb after being dynoed and an 850 hp double pumper was installed although I was told from the shop all adjustments are good I went back through everything and have it pretty straight other than the carb. Timing is spot on. Only prob is the hesitation when first stabbing it also feels like the motor has a little more grunt in it, but its being held back just a little. Carb set up pink accelerator pump cams set on #2 was on #1 spot on carb. 78/78 on primary jets 86/86 on secondary jets 4.5 PV in primary and plugged PV in secondary (vac is 6") squirt nozzles are 28 primary and 29 secondary. In thinking slightly bigger nozzles? Any ideas? Really just trying to fix the 1sec hesitation, but trying to give as much info as possible. Thanks!