Engine, gas, 8 cylinder, 5.7L, sequential fuel injection, aluminum, high output

Years 1970–71, 2001–04, 2027 Models 5 Factory citations 11

Also described as Engine - V8, 454 Cu. In. Special Hi Performance454 ci 450 hp V8454ci 425hp Engine (aluminum heads)454 CID V8 450hpEngine, 6.7L V8

Also documented for Cadillac

Documented applications

Chevelle / El Camino

1970–1971 Factory-verified

GM Heritage factory kit — 1970 Chevrolet Chevelle, p.63.
GM Heritage factory kit — 1971 Chevrolet El Camino, p.33.
1970 (–1971 listed) Factory-verified

The legendary SS 454 LS6; 1971 LS6 Chevelle listed but essentially none delivered — treat 1971 as disputed (factory kit resolves: present in 1970-Chevrolet-Chevelle.txt)

GM Heritage factory kit — 1970 Chevrolet Chevelle, p.63.
GM Heritage factory kit — 1971 Chevrolet El Camino, p.33.

Corvette (C3)

1971 Factory-verified

$1,221.00; 188 built (price and count: Corvette Black Book); only year LS6 offered in a Corvette

GM Heritage factory kit — 1971 Chevrolet Corvette, p.70.

Impala / Full-Size

1970 Confirmed

Spec. hi-perf. & 4 bbl

Corvette — C5 (1997–2004)

2001–2004 Factory-verified

only in: Z06 (2003 order guide: not offered in coupe or convertible); the 2004 NICB table lists a 5.7L high output V8

GM factory document — 2001 chevrolet corvette rpo code list, p.1.
GM factory document — 2002 chevrolet corvette rpo code list, p.1.
GM factory document — 2003 chevrolet corvette rpo code list, p.1.
GM factory document — 2004 chevrolet corvette rpo code list, p.1.
GM Heritage factory kit — 2003 Chevrolet Corvette, p.106.

Corvette — C8 (2020–2027)

2027 Factory-verified

only in: Stingray, Grand Sport, Grand Sport X

GM factory document — 2027 chevrolet corvette fleet order guide rpo codes, p.1.

This page aggregates every documented appearance of LS6 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.