The Mirage GR8 was the last of the Gulf Oil funded Mirage racecars.
After a disappointing 4th place victory with the GR7, Wyer managed to convince the Gulf Oil executives to fund one more try at Le Mans.
To meet the specific needs of the high-speed track, Bailey created a longer wheelbase chassis. This 'GR8' was clothed in a slippery body penned by Horsman and Wyer.
Two examples were entered, equipped with very mildly tuned Cosworth DFV engines. In qualifying the two powder blue and orange machine locked out the front row. During the race the engine's vibrations caused a cracked pipe on the leading car but it could be replaced in time for Derek Bell and Jackie Ickx to clinch the victory. The sister car with Schuppan and Jean-Pierre Jaussaud completed the party with a third. It was the third win at Le Mans for the Wyer and Gulf partnership but also its last. Gulf withdrew its support and the cars were sold off.
It was by far not the end of the Mirage story as the two GR8s were acquired by American Harry Cluxton, who had big plans for the cars. Employing many of the Gulf Racing staff, he entered the two cars at Le Mans. Still powered by the DFV V8, they finished a credible second and fifth behind the all new Porsche 936. With revised bodies and now fitted with turbocharged Renault engines, they were back again in 1977. One retired but the other finished second to the 936 again. The cars were back two more times but no notable results could be added to the Mirages' tally. Although they won only two major races, the Mirage M6 and its various derivatives still rank among the finest racing cars of the 1970s. The small team was always up against giants like Ferrari, Matra and Alfa Romeo. The Mirage was certainly the most successful of all DFV engined sports prototypes of the period.
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