Mystery Problem?

[L&L70]

I tried searching, but I'm having a tricky time even explaining it. I have an 87 swb with a TBI 305 and TH400. Its has complete tune up with plugs, wire, cap, rotor, fuel filter, ignition coil (went bad), ignition control module (tested bad) and perfect fuel pressure. As soon as you give it throttle it responds as expected and then immediately "bogs" down. It feels like the transmission is doing it. Its less noticeable after warming up. I do not know much about transmissions or what controls them. You can throttle out of it so to speak, but under normal throttle it feels like the converter is locking up? Sorry for the amateur hour, looking for ideas. Thanks