Advice Needed - Can't Start Rebuilt 273

If it ran,but was spitting I would check firing order with your wires.I would also pull the dist. and install 180 out(just incase your timing gears are installed improperly)Also check #5,7 wires common problem.Just trying to help with getting it going.It,s hard when your not hands on.Good Luck!

P.S Do you have another carb?Have you checked squirters to make sure your getting even fuel?