I believe it was roughly the same iron block/head pushrod engine from the early '80s all the way through 2002 when they discontinued it.
This was an iron block, aluminum head pushrod engine. I believe it was introduced in the late 80's or very early 90's as a replacement for the 2.5 iron duke.
They were used in many cars, Cavaliers/sunfire, chevy corsica/Beretta, A bodies (Olds cutlass ciera, pontiac 6000, buick century, chevy celebrity) and was also used in S10 pickups.