Grand Touring Experimental (GTX)[1] is a former classification and set of regulations designated to grand touring cars and sports prototypes in sports car racing competing in the IMSA GT Championship, maintained by IMSA between 1977 and 1982. Some cars were based on FIA Group 5 rules; such as the Porsche 935, and some cars were based on FIA Group 6 regulations, such as the Lola T600. Like the original GTO class, the class rules specified turbocharging and supercharging was allowed on engines up to a size of 6.0 L (370 cu in); with engine design and number of cylinders being free and unrestricted. Engines over 6.0 L (370 cu in) were required to be naturally-aspirated.[2][3][4][5]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Porsche_935-78_147_%283421548586%29.jpg/220px-Porsche_935-78_147_%283421548586%29.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Ferrari_BB_Pozzi.jpg/220px-Ferrari_BB_Pozzi.jpg)
Cars
- BMW 3.0 CSL
- BMW M1/C
- BMW 320i Turbo
- Busby March M1-Chevrolet[6]
- Chevrolet Camaro
- De Tomaso Pantera
- Chevron GTPB21 with a rear hatch from a C3 Corvette for a windshield)[6] (
- DeKon Monza
- Greenwood SuperVette
- Ferrari 512 BB LM
- Kemp Mustang Cobra II
- Ford Zakspeed Mustang Turbo
- Lola T600
- SVP M81 McLaren Mustang[6]
- Porsche 934/5
- Porsche 935
- Datsun 280ZX
References
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