Need help with stumbling issues

[Robert Ensminger]

So I’m new to this, so sorry if I don’t know the protocol. I have a 94 GMC k1500 with a 350 5.7 L TBI. I recently replaced all the gasket from the heads up. But now I’m having trouble with my truck stumbling and hesitation when accelerating and deceleration. In the process of trying to figure this out. I’verrbuild the TBI, replaces the fuel filter, the fuel pump is less then a year old, new distributor, new coil, new wires, new plugs, new air filter, new ignition control module, new timing chain. I’m at a loss. Can someone please tell me what is wrong. 

[riverbanks]

You have the timing set properly?

[papbear1973]

i have the same problem have done the same thing to my engine if you find the problem please post it thank you