1976 IMSA GT Championship season Tags: Motorsport Season.The 1976 Camel GT Challenge season was the 6th season of the IMSA GT Championship auto racing series. The series was for GTO and GTU class Grand tourer racing cars. It began January 31 1976 and ended November 28 1976 after fifteen rounds. series IMSA GT Championship year 1976-01-01T00:00:00+02:00 Learn more... Loading...