L-78 ● Confirmed

Oldsmobile · Regular Production Option

400 CID 4-bbl high-compression — the standard 4-4-2 engine

Years 1966–67 Models 1

Documented applications

Cutlass / 4-4-2 →

• 1966–67 ● Confirmed

  350 hp

This page aggregates every documented appearance of L-78 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.