IMSA GTP (80's)

In 1981, purpose-built prototypes appeared in a new category, known as GTP, similar to the new Group C introduced in the World Endurance Championship the following year, the main difference between the two categories was the former had no emphasis on fuel consumption which was highlighted by Derek Bell quoting "race fans do not come to races to watch an economy run!" (referenced from Prototypes: The History of the Imsa GTP Series).

Brian Redman was the first champion of the GTPs, driving a Lola T600. March also fielded prototypes, in which Al Holbert won the 1983 championship, and Randy Lanier a year later. 1984 also saw the introduction of the Porsche 962, which dominated the series from 1985 to 1987. Nissan then took control of the series in 1988, but faced challenges from Jaguar, Porsche, and Toyota throughout the proceeding three years. Toyota was quickest in 1992 and 1993, this being the end of GTP era.

There were many other manufacturers in the GTP class, such as URD, Spice, Intrepid or Gebhardt, and in the early 1990s, Mazda. Along with the GTP cars, the Camel Lights lightweight, low horsepower prototype category was introduced in 1985. Argo were the first Lights champions, followed by Spice. Well known were also Tiga, Royale, Alba, Fabcar, and Kudzu.

// Extracted from Wikipedia (see full text clicking here)//

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