"High Compression Starfire V-8 Engine" — the 375 hp 425 as a coded option in other full-size Oldsmobiles

Years 1966–67, 1972 Models 3 Factory citations 1

Also described as 455 4-bbl (A-body), +$137High-compression Starfire V-8 (375 hp 425)

Documented applications

Cutlass / 4-4-2

1972 Factory-verified

The non-W-30 442 455. Factory list: "Engine Option - 455 Cu. In. V8 4-Barrel; Dual Exhaust System included"

GM Heritage factory kit — 1972 Oldsmobile Cutlass 442 Info kit, p.186.

Full-Size 88 / 98

1966–67 Confirmed

Starfire; optional in Delta 88 Custom 1967

Starfire / Omega

1966–67 Confirmed

First appearance of Starfire content as a corporate-style code

This page aggregates every documented appearance of L-75 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.