LS4 Factory-verified
Also described as 454ci 275hp V8 (big-block)454ci 270hp V8454 CID V8 235hp
Documented applications
- 1973–1975 Factory-verified
last big-block MC
GM Heritage factory kit — 1973 Chevrolet Monte Carlo, p.6.GM Heritage factory kit — 1975 Chevrolet Monte Carlo, p.6.
This page aggregates every documented appearance of LS4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.