454ci 460hp Engine — announced, never produced

Years 1963–79 Models 2 Factory citations 1

Also described as 454 CID V8

Documented applications

Corvette (C3)

1970 Factory-verified

Listed in early 1970 literature at roughly $3,000; 0 built — cancelled in GM's option de-proliferation purge (later sold as crate engine); factory kit spec book documents it as "460 HP RPO LS7" on the power-team/price pages, though it never reached the retail Black Book summary

GM Heritage factory kit — 1970 Chevrolet Corvette, p.76.

Impala / Full-Size

1963–70s (varies) Single-source

Heavy duty & 4 barrel

This page aggregates every documented appearance of LS7 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.