* 2.8L V6: This was a fairly standard offering.
* 3.1L V6: A more powerful V6 option.
* 5.0L V8 (the "small-block"): This was the most powerful option generally available. There were also variations of the 5.0L in terms of horsepower output.
* 5.7L V8 (LT1): This was available in the Firebird Formula and Trans Am, offering significantly more power than the 5.0L.
So there's no single answer. You need to know the specific trim level (base, Formula, Trans Am, etc.) of the 1992 Firebird to know which engine it *likely* had.
