IMSA GTO and GTU documentary featuring 100th win of 600hp Mazda RX-7! Includes Nissan 300ZX, Mercury Cougar XR7, Ford Mustang, Chevrolet Camaro, Dodge Daytona and more! - in Japanese (8:39)
IMSA GT was a world-class professional racing series held in the U.S. and Canada from the late 1970s to the late 1990s. A favorite playing ground of the world's auto manufacturers, who brought
some of the most powerful and technically advanced race cars to play and win in North America. Originally dominated by Porsche 911 Carrera and 930, and American V8s like the Corvette, Camaro, Firebird, Mustang, Monza and Buick, IMSA GTO
racing evolved rapidly in the turbo era with Porsche 935 Turbo, Ford Mustang Turbo, Nissan 300ZX and Toyota Celica dominating at various times. Finally, Audi arrived with its turbo 5-cylinder Audi Quattro AWD technology and obliterated the competition
due to the vast amount of traction, despite the best efforts of the Mercury Cougar XR7 and Nissan 300ZX teams. IMSA GTU was for smaller bore 3.0 liter cars. Porsche Carrera and 914-6 dominated early on, then Mazda RX-7 and Dodge Daytona dominated in later years.
IMSA GT's attraction was the virtually unlimited rules allowed. The only stock part on many cars was the roof, with every other part of the car completely fabricated for top performance. In this respect, IMSA GT cars resembled SCCA GT-1 and GT-2
racers, but there was much more variation in engines, transmissions and braking systems like FIA GT. Due to the high costs we may never see another series like IMSA GT in North America.