[piecesparts]

Does this happen on ALL accelerations or just ones that happen when you are cruising around city streets and then try to "Jump On It" when you come to an open area. It sounds as if you are getting some fuel vapor binding. I had a similar situation shortly after my last rebuild and I put on a new fuel pump and fuel lines. I was using an Edelbrock fuel pump WITHOUT the factory recirc line back to the tank from the pump, like my factory pump had. Every time I accelerated the truck would bog really bad. I solved the problem by putting a different plate on the fuel pump bottom and reconnecting the recirc line to the fuel tank.