FunCar.
Home / Browse / Buick Grand National / GNX / G-body Generation
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 →