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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.

    Source document

    docs/rpo/oldsmobile/delta-88-h-body.md

    Interactive view →

    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive Delta 88 — H-body (1986–1991) page.

    Oldsmobile Delta 88 (Eighty Eight from 1989) — H-body (ninth generation) (1986–1991)

    The ninth-generation Delta 88 was Oldsmobile's front-wheel-drive H-body coupe and sedan, sold as the Delta 88 for 1986–1988 and as the Eighty Eight Royale for 1989–1991 (Wikipedia). It shared its platform with the Buick LeSabre, and the Pontiac Bonneville joined it for 1987 (Wikipedia). The 1986 NICB manual prints the Delta 88 Royale, Royale Brougham and Royale Brougham LS, and the 1991 manual prints the Delta 88 Royale and Royale Brougham in its 1987–1991 columns. No GM order guide, data book, Heritage kit or service RPO list for this generation is in the archive, and no Chevrolet kit shares its platform, so only engine and suspension codes are listed: Wikipedia's Oldsmobile 88 article prints and dates the engine codes, and gnttype.org's 1986 and 1987 Buick VIN tables corroborate the LG3 on the Buick LeSabre. No source read ties a transmission, axle, other option, package, paint or trim code to this car with a year, so none is listed.

    Codes

    Engines

    Code Description Years Models/Notes Confidence
    LN7 Engine, 3.0L (181 cu in) V6, multiport fuel injection 1986 125 hp, the standard engine; Wikipedia's Oldsmobile 88 article prints it in its engine table for 1986 only and says 1986 was the only year with the 3.0 L; the 1986 NICB manual prints a 3.0L V6 MFI engine with VIN letter L but no RPO codes (matched by meaning only); shared H-body code, but the Buick LeSabre sources add no second source (gnttype.org prints LN7 only for the Somerset) single-source
    LG3 Engine, 3.8L (231 cu in) V6, sequential fuel injection 1986–1988 150 hp, the optional engine in 1986 and the only engine in 1987 and early 1988; Wikipedia's Oldsmobile 88 engine table is headed RPO/VIN code and prints "LG3/3" for 1986 to mid-1988 (the LN3 replaced it that year, so the two codes overlap in 1988), which pairs the code with a VIN digit and is not a slash form of two codes; shared H-body code, corroborated from the Buick LeSabre: gnttype.org's 1986 and 1987 Buick VIN tables each print engine option code LG3 for the LeSabre (one source, as the two blocks print the same engine cell); the 1986 NICB Oldsmobile engine table prints VIN letter B for the 3.8L V6 fuel-injected engine, where Wikipedia and gnttype.org give VIN 3 (the Buick figure) single-source
    LN3 Engine, 3.8L (231 cu in) V6, 3800, multiport fuel injection 1988–1991 165 hp; Wikipedia's Oldsmobile 88 text says the 3800 replaced the earlier 3.8 L for 1988, while its engine table dates the LN3 from mid-1988 (printed "LN3/C", the VIN letter C); shared H-body code, but no sibling source prints it: gnttype.org's VIN tables end at 1987 and the NICB manuals read print no RPO codes single-source

    Equipment

    Code Description Years Models/Notes Confidence
    FE3 Suspension, sport 1990–1991 Wikipedia's Oldsmobile 88 article says the 1990 model was left with the standard load-leveling suspension and the FE3 sport suspension (two alloy wheel designs) and that the FE3 option remained available for both Royale and Royale Brougham in 1991; the Ninety-Eight's merged doc words the same code "Suspension, sport, level 3"; matched to the car by the article's text, no list prints it single-source

    Sources

    Factory documents (T1)

    No Oldsmobile factory document for the 1986–1991 Delta 88 is in docs/factory-docs/ or docs/heritage-ocr/, and the brief lists no Chevrolet Heritage kit for this platform, so no row carries an [FD] or [HK] citation.

    Other sources

    • https://en.wikipedia.org/wiki/Oldsmobile_88 — ninth generation (1986–1991) text and engine table (the brief's Oldsmobile_Eighty-Eight address redirects here; retrieved 2026-11-05 as wikitext, action=raw)
    • http://www.gnttype.org/general/vin.html — per-year Buick VIN tables, the 1986 and 1987 LeSabre blocks (T3, Buick LeSabre sibling corroboration of LG3 only, owner ruling 2026-11-05); read from the Wayback snapshot http://web.archive.org/web/20250816121631/http://www.gnttype.org/general/vin.html (retrieved 2026-11-05)
    • NICB Passenger Vehicle Identification Manual, GM sections (T4): docs/reference/nicb/nicb1986-gm.txt p.69 (PDF page 69 of 1986.pdf, read on the page image) — Delta 88 car lines and the Oldsmobile engine VIN table; nicb1991-gm.txt p.37 (read on the page image) — Delta 88 Royale and Royale Brougham, 1987–1991 columns