1990 C4 Corvette

• Finally, after months of hoopla and a few false starts, the super-performance ZR-1 Corvette arrived in 1990.
• Intended for production in limited quantity, with a price tag higher than any General Motors product, the ZR-1 became a collectible long before anyone ever saw one "in the flesh."
• Customers seemed eager to pay far above the suggested retail price for the few examples that became available.
• Under the ZR-1's hood was a Lotus-designed 32-valve, dual-overhead-cam, 350-cid (5.7-liter) V-8, by Mercury Marine in Oklahoma.
• Although the displacement was identical to the standard Corvette V-8, this was an all-new power plant with different bore-and-stroke dimensions.
• Wider at the rear than a standard model, partly to contain huge 315/35ZR-17 rear tires, the ZR-1 was easy to spot because of its convex rear end and rectangular tail lamps.
• Ordinary Corvettes continued to display a concave rear end with round tail lamps.
• Standard ZR-1 equipment included an FX3 Selective Ride adjustable suspension, which was also available on standard Corvettes with the six-speed manual gearbox.
• Four-speed overdrive automatic was available (at no cost) only on the regular Corvette.
• New standard equipment included an engine oil cooler, 17-inch alloy wheels, and improved ABS II-S anti-lock braking.
• The convertible added a new backlight (i.e., rear window) made of flexible "Ultrashield" for improved scratch resistance and visibility.
• An air bag was installed in the new steering wheel on all Corvettes and a revised dashboard mixed digital and analog instruments.
• Corvettes colors were
  • White
  • Steel Blue Metallic
  • Black
  • Turquoise Metallic
  • Competition Yellow
  • Dark Red Metallic
  • Quasar Blue Metallic
  • Bright Red
  • Polo Green Metallic
  • Charcoal Metallic
• Interiors came in Blue; Black; Gray; Red; Saddle; and White.
• Standard features included a removable body-color roof panel for hatchbacks or a convertible top (Black, Saddle, or White top colors were available, but the choices you could order were determined by paint color).
• Cloth upholstery was also standard.

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