So I put a 4.8/5.3 into my 92 c2500 truck and bought the summit carb swap kit and bolted a edelbrok 650 carb on top of the kit and after plugging everything into the msd ignition box it started right up first try but I have a problem where if I try to accelerate quickly and almost die I have tried all the preset timing tunes on the msd and even put a 1 inch spacer under the carb can someone please help?