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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/starfire-omega.md

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    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive Starfire / Omega page.

    Oldsmobile Starfire & Omega — Option Codes

    Two unrelated nameplates share this document:

    • Starfire — full-size personal luxury (1961–1966), then the H-body subcompact hatchback (1975–1980).
    • Omega — compact: X-body Nova-based (1973–1979), FWD X-body (1980–1984; covered here through 1982).

    Confidence: confirmed (2+ independent sources), single-source, disputed.

    Years 1961–1966 — full-size Starfire

    The Starfire was a heavily-equipped model, not an option package, and this era predates Oldsmobile's published corporate-style code lists (divisional option numbering; the 1965 CSM has no option list). Standard equipment, 1961: leather bucket seats, console with tachometer and floor shifter, power steering/brakes/windows/driver's seat.

    Code Description Years Models/Notes Confidence
    — 394 CID Starfire V-8: 330 hp (1961), 345 hp (1962–64) 1961–64 Standard; same engine optional in other full-size models by name confirmed (feature), n/a (code)
    — 425 CID Super Rocket, 375 hp 1965–66 Standard confirmed (feature), n/a (code)
    L-75 "High Compression Starfire V-8 Engine" — the 375 hp 425 as a coded option in other full-size Oldsmobiles 1966–67 First appearance of Starfire content as a corporate-style code confirmed
    — Body styles: convertible only 1961; +hardtop coupe 1962; coupe only 1966 1961–66 Context confirmed

    Years 1973–1974 — Omega, first generation (X-body)

    Code Description Years Models/Notes Confidence
    L22 250 CID Chevrolet I6 1-bbl (base) 1973–74 Omega confirmed
    L-32/L-34-family 350 350 Olds Rocket V-8 (4-speed manual std w/V8) 1973–74 Omega confirmed (engine), code application single-source
    M-38 TH-350 automatic 1973–74 — confirmed
    — Brougham S trim (new 1974); "Doctor Oldsmobile" Omega promo cars (53 built, 1973, Van Nuys) 1973–74 Trim/promo, no RPO documented single-source

    Note: the 1973 CSM contains no option list; 1973 Omega codes are inferred from 1972/1974 usage.

    Years 1975–1977 — Starfire H-body launch; Omega second generation

    Starfire (H-body)

    Code Description Years Models/Notes Confidence
    LD7 231 CID (3.8L) Buick V6, 110 hp — standard 1975–76, optional 1977 1975–80 Starfire confirmed
    LX6-precursor 140 I4 140 CID (2.3L) Vega-family I4 standard 1977 Starfire; code not confirmed in Olds lists single-source
    Y-66 SX package (appears un-yeared in both CSM-derived lists) 1975+ "Starfire SX" was marketed as the upmarket model; code-to-model mapping not explicit in sources confirmed (code exists), application unclear
    Y-64 Starfire GT package (stripes, Rallye suspension, gauges) 1976–81 (per forum source; GT introduced mid-1975) Starfire single-source
    — Firenza package: Rallye suspension, front air dam, rear spoiler, flared wheel openings, sport wheels late 1978–80 Option code not documented in consulted sources confirmed (package), gap (code)

    Omega

    Code Description Years Models/Notes Confidence
    L22 250 Chevrolet I6 (base through 1976) 1975–76 Omega confirmed
    LD7 231 Buick V6 (replaces I6) 1977–79 Omega confirmed
    LV8 260 CID Olds V-8 2-bbl 1975–79 Omega (also Starfire from 1977 per some references — application to Starfire not confirmed) confirmed (Omega)
    L-34-family 350 350 Rocket V-8 (top engine) 1975–76 Omega confirmed
    — Trim ladder: F-85, Omega, Omega SX, Omega Brougham 1975–79 SX trim — no separate RPO documented confirmed (trims), gap (codes)

    Years 1978–1980

    Code Description Years Models/Notes Confidence
    LX6 151 CID (2.5L) Pontiac "Iron Duke" I4 2-bbl, 85 hp 1978–80 Starfire base (and 1980–82 Omega FWD base) confirmed
    LD7 231 V6 1978–80 Starfire/Omega option confirmed
    LG3 305 CID Chevrolet V-8 2-bbl 1977–79 Starfire V8 option (dropped during 1979) confirmed
    Y-64 Starfire GT package 1978–80 Per forum source (1976–81 span) single-source
    — Starfire Firenza package 1978–80 Code gap confirmed (package)
    — Omega SX coupe; 1980 FWD X-body launch (2.5 I4 / 2.8 LE2 V6) 1978–80 — confirmed

    Years 1981–1982 — Omega FWD

    Starfire discontinued after 1980 (replaced by the J-body Firenza, out of scope here).

    Code Description Years Models/Notes Confidence
    LX6-family 2.5 I4 2.5L Iron Duke I4 (std) 1981–82 Omega confirmed
    LE2 2.8L V-6 1980–82 Omega confirmed
    LH7 2.8L high-output V-6, 130 hp 1982 Omega ES/SX confirmed
    — Sport Omega package (1981: urethane fenders, red-orange striping); SX coupe replaced by ES in 1982 1981–82 Package codes not documented in consulted sources single-source (packages), gap (codes)

    Coverage gap: H-body Starfire and X-body Omega appearance-package RPOs (SX, GT/Y-64 aside, Firenza, Sport Omega) are barely documented online; dealer order guides (GM Heritage Center) are the follow-up source. The enthusiast CSM compilations end at 1972/1976 and skew A-body/full-size.

    Sources