After re reading through your threads, I realize
1 you have a 86 Tuned port SBC
2 you should have a 16198259 ECM to run it
3 I did not see a Mass Air Flow sensor on the engine or in the airstream.
4 It has become obvious that you could also have god knows what for a wiring harness this could be 1 of 2 of your biggest problems.
I have seen you post several times and realize your head must be spinning.
Do you have any part of the harness that isnt plugged into a sensor or the computer.
Didnt you also say the ECM has 3 plugs and the harness has only 2?