truck was running fine just stopped. checked and no spark,pulled plug get one spark than nothing. rotor turns,changed coil,voltage at coil,nothing. changed dizzy with a good one,still nothing???? it's a 302

 

Had 88 f250 w/ 460 do similar thing and come to find out it was the computer. another sign i had was the electric fuel pump just kept running instead of running and shutting off like it was supposed to.

 

fuel pump is working, turn key on pump runs 4 sec,should the coil have power on both sides with the key on?

 

Fuel pump running for 4 seconds is a very long time for the pump to run, it should only run for one second.
That said the computer can not stop the coil from firing only change the time that it fires.
Pull out the SPOUT out and you cut the link to the computer and the Ignition system.
If no spark with the SPOUT out it can only be the Distributor/PIP sensor/TFI Module combination and Coil that you have changed plus the wiring.
A lot of the time this turns out to be a bad plug that plugs onto the Coil, check this plug very closely. You should have steady power on one side of the coil and the test light should flash on the other side while cranking.