You didn't list the things you already checked. I am assuming by your name, you have an '83. I would start w/ distributor, hot wire to coil getting 12 volts w/ ignition on?....did the distributor sit back into the intake withou problems? Ground wire positioned right on the HEI coil?
Is the distributor turning when you crank the engine? take the cap off and look. (for that matter look at oil pressure when cranking see if needle moves up--that'l tell you if distributor is turning) Rotor look good?