Generation study
Buick Grand National / GNX G-body
(1984–1987)
Turbocharged 3.
Buick Grand National / GNX G-body
Why it qualifies
Turbocharged 3.8L V6, 235-276 hp depending on year/trim. GNX (1987 only, 547 built, McLaren-modified) is a top-tier American muscle collector. Black-only paint scheme is iconic.
Watch out for
- GNX authenticity — VIN check via plaque (1-547)
- Hot-air vs intercooled (1986+) makes huge value difference
- Originality matters more than restoration quality
Market trend
↑ APPRECIATING
· PRICE BAND premium
Active G-body listings
No G-body Grand National / GNX listed right now. Try other Grand National / GNX generations →