Had to have been the 2.8. I had the 4.3 and it was a great motor.
4.3 was the shortened 305 block I believe. I had a 305 in a Malibu Wagon, that thing kicked ass. Miss that car. The frame behind the rear axle rusted and broke and the bumper fell to the ground and I just used ratchet straps to the roof rack to hold it back up LOL.
Here is a pic of that one. Now the red Beretta next to it had a 2.8 and it hauled ass and sounded real good. Must be the fuel injection? Or the changed it that year somehow? That was a real fun car too.
60* V6. No torque/HP worth a damn.Honestly I don't know. But a guess is the 2.8. Stupid GM.... installing an engine that could not carry it's own weight ???