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Full-size performance

1990 Pontiac Grand Prix Turbo

Full-size performance powered by 1990 Grand Prix Turbo intercooled 3.1-liter V6.

Classic Muscle EditorialLast reviewed Sep 16, 2026

Suggest a correction
Engine 1990 Grand Prix Turbo intercooled 3.1-liter V6
Output 205 hp; output rpm unresolved
Transmission Four-speed performance automatic
Program Modern American Performance

Story

1990 Pontiac Grand Prix Turbo

Pontiac's exact-year literature separates the Turbo coupe from the ordinary Grand Prix and STE sedan. Its intercooled V6 is paired with a performance automatic; the standard Grand Prix's manual choice is not transferred to this application.

Source boundaries

The 189-CID field reproduces EPA's ASC Grand Prix Turbo row. It is not a conversion of nominal 3.1 liters or an assertion that the ordinary Pontiac V6 has identical specifications. EPA separately identifies an STE Turbo sedan; this coupe draft neither substitutes that model nor claims its coverage.

Photo pending

Output rpm, exact factory engine code and production totals remain unresolved. The axle figure is attributed to the factory performance example. No brochure-photo reuse license is established; licensed exact-year exterior photography remains pending.

Price history

Values

Nominal dollars from original price sheets, auction archives, and approved value references.

Original Price

A verified original price is not yet available for this car.

Values move with paperwork, originality, options, condition, venue, and body style. High bids and guide values are labeled separately from completed sales.

Reference records

Options, Colors & Components

Source-backed details for trim, chassis, production, and authenticity.

Engine Details

  • Documented model-year powertrain 1990 Grand Prix Turbo intercooled 3.1-liter V6; 205 hp; output rpm unresolved; 220 lb-ft; output rpm unresolved · 1990 Pontiac Grand Prix Turbo · engine assembly / specification

Transmission

  • Factory transmission Four-speed performance automatic

Still Researching

  • rear axle The reviewed evidence does not provide a complete exact-year rear axle specification and application record.
  • brakes The reviewed evidence does not provide a complete exact-year brakes specification and application record.
  • suspension The reviewed evidence does not provide a complete exact-year suspension specification and application record.
  • option packages The reviewed evidence does not provide a complete exact-year option packages specification and application record.
  • production The reviewed evidence does not provide a complete exact-year production specification and application record.
  • paint colors The reviewed evidence does not provide a complete exact-year paint colors specification and application record.
  • trim and appearance The reviewed evidence does not provide a complete exact-year trim and appearance specification and application record.
  • interior The reviewed evidence does not provide a complete exact-year interior specification and application record.
  • authenticity markers The reviewed evidence does not provide a complete exact-year authenticity markers specification and application record.

Codes & names

Names & Engine Codes

Common names and codes are grouped so LS6 references point to the same engine, not separate pages.

1990 Turbo Grand Prix V6 1990 Grand Prix Turbo intercooled 3.1-liter V6

Photo and video gallery

Gallery

0 additional photos or videos

Approved images are shown with the relevant sections above. No additional gallery media is available yet.

Sources & Documentation

Reader contributions

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