Is it a big block or small block? Big blocks are easy for a vandal to mess with your firing order because the distributor cap is right there up front. Aftermarket ballast resistors often have the wrong Ohm levels. Points and condenser are a good place to start looking. If you rule out spark issues then look for fuel issues. Did some driver high center the car and squish the fuel line along the rocker? If the tank has gunk in it the sender sock will be plugged.
On big blocks the fuel pump push rods can suddenly wear down so that the pump no longer pumps. I've personally seen this many times.