Prior to the issue that came up, i was driving my 1991 Camaro Z28 5.0L/700r4 just fine and found a parking spot and parked.
Next i came back to repark into a better spot and as i started the engine the car seemed quieter and i had very little power and i thought the car was going ro die on me but it didn’t and just kept moving ever so slowly.
It felt as if it was only running on a few cylinders or something but still running.
This has never happened before, and so i proceeded to shut it off when i got to the soot that wasnt that far.
I turned it back on and everything was running just fine. i have turned on the car 6 times since then and nothing has appeared since then from that issue.
Any idea why the car would do that? it was a first for me of experiencing that in my 12 years with it.

 

Could have been some random vapor lock in the fuel rails? Or the first indication of a failing fuel pump.

 

EFI engines don't have vapor lock in the fuel rails.

As for the cause? Hard to say. It would have been easier to diagnose it, in person, while the problem was happening. Now? It's just WAG's.