[66StangGuy]

yeah sounds like carb. try setting everything again or maybe even run carb cleaner though it to see if that helps at all. if anything get a gas can and run your fuel pump directly to that and see how it runs and maybe you just have bad gas? dont know..i had a similar problem and i just bought a new carb and everything was perfect after that. fired right up and no problems ever since. look into the carb more and see if everything is ok.. also check that the advance on the dist is ok.. maybe one of the springs for the advance came off and its firing the spark at the wrong time once the engine gets to a certain rpm??