Toronado — E-body (1983–1985)

the Buick 252 V6 (VIN code 4); Wikipedia's Buick V6 engine article prints LC4 and lists the Oldsmobile Toronado through 1984, matching its Toronado article (252 V6 through 1984); shared E-body code, cited from the Buick Riviera: gnttype.org's 1984 Buick VIN table prints LC4 for the Riviera Luxury, sibling corroboration of the code, T3, which does not lift the row; its 1983 table repeats the 1984 one; 1985 is left out because the 1985 NICB Oldsmobile engine table prints VIN code 4 in its 1984 column but not in its 1985 column and Wikipedia gives the engine through 1984

the Oldsmobile 307 V8 (VIN code Y), standard in 1985 per Wikipedia's Toronado article; Wikipedia's Oldsmobile V8 engine article prints LV2 and lists the Toronado through 1985; shared E-body code, cited from the Buick Riviera: gnttype.org's 1984 Buick VIN table prints LV2 for the Riviera convertible, sibling corroboration of the code, T3, which does not lift the row; its 1983 table repeats the 1984 one and its 1985 Riviera block repeats a later model year's table (a different engine), so neither adds a year

the Oldsmobile 350 cu in diesel (VIN code N); Wikipedia's Oldsmobile Diesel engine article prints LF9 and lists the Toronado through 1985, and its Toronado article names the diesel V8 for the generation; shared E-body code, cited from the Buick Riviera: gnttype.org's 1984 Buick VIN table prints LF9 for the Riviera Luxury, sibling corroboration of the code, T3, which does not lift the row; its 1983 table repeats the 1984 one; the 1983 and 1985 NICB manuals print VIN code N in the Oldsmobile engine table without an RPO code