- 1987 Single-source
Wikipedia's Firenza Engines list and its Family II engine article give it 1987–1988, but the article's text says the overhead-cam engine was dropped for 1988, so only 1987, which both print, is claimed
LT2 Single-source
Also documented for BuickChevroletPontiac
Documented applications
This page aggregates every documented appearance of LT2 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.