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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    W-34 Confirmed

    Oldsmobile · Regular Production Option

    Toronado performance package: high-lift cam (GM #400165 — shared with 1968–69 H/O and W-30 auto), 400 hp 455, dual exhaust through notched rear bumper w/chrome tips, special OM-code TH-425 ("GT" transmission calibration). Genuine RPO-style order code, factory list price $47.39

    Years 1968–70 Models 1

    Documented applications

    Toronado
    • 1968–70 Confirmed

      1968: incl. cold-air (Force-Air/OAI) induction, ~111 built; 1969: kit bills W-34 as "Engine, 400-hp Rocket 455 V-8 H.C. — includes dual exhausts" and the service list labels it "Air Induction System (Toronado)", production unknown; 1970: sold as **Toronado GT**, $47.39, "special camshaft," dual exhausts, notched rear bumper, GT hood emblem + body-side paint stripes, redesigned torque converter, 5,341 built of 25,433

      Grade note: confirmed [HK: oldsmobile/1969_Oldsmobile_442_Info_Kit.txt p.126, p.140, p.242, p.247; oldsmobile/1970_Oldsmobile_442_Info_Kit.txt p.9, p.182]

    This page aggregates every documented appearance of W-34 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.