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IMSA: 55 years of Motorsports Influence and History (Mark Raffauf)
In this episode of The Logbook, our History of Motorsports Series, Mark Raffauf traces IMSA’s nearly 60-year evolution from John Bishop and Bill France’s founding phone call to today’s hybrid era. Raffauf recounts IMSA’s early experiments with Formula Fords/Vees, the shift to closed-wheel GT racing, the creation of Camel GT, RS/“little car” series on street tires, and All American GT, plus innovations like road-racing stock cars, Group 5, and GTP prototypes developed with the ACO to keep cars available to private teams. He highlights major manufacturers and iconic cars (Porsche 935/962, BMW…
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