Race-bred Grand Sport could mark most expensive Corvette ever

Insight summary

• •The 1963 Chevrolet Corvette Grand Sport, chassis 003, is set for auction on August 15, 2026.
• •This model is one of only five built and was engineered by Zora Arkus-Duntov to outperform the Cobra.
• •Pre-sale estimates predict a hammer price between US$11 million and US$13 million (CDN$15 million to CDN$18 million).
• •The Grand Sport was a secret factory racing prototype developed despite GM's racing ban.
• •The ban was imposed by GM Vice-President Ed Cole due to governmental pressure on corporate racing involvement.