I'm having the same problem. My car will actually stall if I accelerate too quickly. Has even happened a couple of times when I was moving but generally from a standing start. My timing is set to top dead center. I'm guessing that's my problem. Don't have a timing light right now but can someone tell my which direction to push my distributor to advance the timing? or should I just do it by ear? I have the 250 in my 71. Still on points.
do it with a timing light pointed at the timing mark. as you turn the dizzy one way watch the timing mark. if it moves the wrong direction move it the other way. go slowly.
already set it to top dead center like chilton's said - with a timing light. I don't have a timing light now... got a pretty good feel of how much to turn it, just not sure which direction.