Rebuilt 318 install problem

So I started fresh today and pulled everything apart and started from scratch. I replace the GM module, wires, spark plugs, pulled the distributor and checked TDC with the stop.

I now have a consistent spark and can see the timing mark consistently at the 10 degree advanced mark.

It fires right up, but then throws a fire ball out the carb and the motor shuts right off.

I called the engine shop and explained all that I have been thru and they want the car next week.

I will let you know what they find. They can not take until late next week so hopefully I have an answer next weekend.

I've had a lot support from members thru this situation which has helped me keep my sanity. Thank you all for your patience, understanding and for sharing all of you knowledge and experience with me.

THANK YOU ALL!

What are you using for the distributor now?