High-compression V-8 performance engine (400 CID in F-85)

Years 1966–68, 1972 Models 2 Factory citations 1

Also described as 455 4-bbl W-30 spec (A-body)HC 400 police performance engine

Documented applications

Cutlass / 4-4-2

1966–67 Confirmed

Police-oriented; dual exhaust w/425 in 1966 full-size
1972 Factory-verified

Factory list: "Engine Option - 455 Cu. In. V8 4-Barrel; Mandatory & Available Only with W30"

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

Full-Size 88 / 98

1968 Confirmed

B-07

This page aggregates every documented appearance of L-77 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.