TH-350 (350 4-bbl Delmont in 1968 per FAQ 88/98 page)

Years 1968–69, 1973–74 Models 3 Factory citations 1

Also described as TH-350 automatic (A-body only 1969)TH-350 automatic

Documented applications

Cutlass / 4-4-2

1969 Factory-verified

1969 factory service list: "Turbo Hydra-Matic Transmission (A Body Only)"

GM Heritage factory kit — 1969 Oldsmobile 442 Info Kit, p.247.

Full-Size 88 / 98

1968–69 Disputed

CSM lists say A-body only 1969 — minor source conflict

Starfire / Omega

1973–74 Confirmed

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This page aggregates every documented appearance of M-38 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.