Delta 88 — B-body (1983–1985)

shared B-body powertrain code, cited from the Chevrolet Caprice kits, which print LD5 as the 231 cu in 3.8L V6; Wikipedia's Eighty-Eight article names the 231 V6 as the standard engine for 1983; for 1984 and 1985 no Delta 88 source names the engine except the article's generation infobox, which lists the 231 V6 for 1977–1985 under the code LD7, a code Wikipedia's Buick V6 article dates to 1977 only

Oldsmobile 307 Rocket V8; Wikipedia's Oldsmobile V8 article lists the LV2 (VIN code Y) for the Oldsmobile 88 for 1980–1985, and its Eighty-Eight article names the 307 as a 1983 option and the 1985 cars as the last with Rocket V8 power; 1984 from a 1984 Royale Brougham with the Olds 307 (The Truth About Cars); the Caprice kits of these years show the Chevrolet 305 (LG4) instead, so no factory page prints the code for this car

shared B-body powertrain code, cited from the Chevrolet Caprice kits (1984 also from the air-conditioning weight remarks); 350 cu in; Wikipedia's Oldsmobile diesel article lists the LF9 for the Delta 88, and its Eighty-Eight article names the 350 diesel as a 1983 option

shared B-body transmission code, cited from the Chevrolet Caprice kits (the 1984 page prints MXO); Wikipedia names the THM 200-4R four-speed overdrive automatic among the generation's transmissions, while the kits pair MX0 with the 700-R4 (1985) and with the 700-R4 or the 200-4R (1984), so the code is matched to the Delta 88 by its meaning, a 4 speed overdrive automatic, not by one unit; the 1983 Caprice kit shows the overdrive automatic without a code, so 1983 is left out