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Wow! Both the 1,250-hp ZR1X and 1,064-hp ZR1 easily broke the seven-minute barrier—with GM engineering employees, not pro ...
The ZR1 accomplished that easily by setting a time of six minutes and 50.76 seconds, and the mighty ZR1X accomplished a time ...
Chevy took it personally when the Mustang GTD became the first American car to break the 7-minute barrier at the Nurburgring.