Corvette ZR1X Runs 8.675 Seconds — Now the Rulebook Is Under Pressure

There comes a point when a production car stops being merely quick and starts creating logistical problems. The Chevrolet Corvette ZR1X appears to be there. Officially labeled the fastest Corvette ever built and the fastest production car ever built in America, it did more than exceed projections. It went past existing regulatory boundaries.

Initially, Chevrolet projected a 60 mph run in less than 2.0 seconds, while the quarter-mile would be done under 9.0 seconds. Top speed would sit at 370 km/h. These were certainly ambitious numbers. Then the car went to US 131 Motorsports Park in St. Martin, Michigan, and produced something more concrete.

The ZR1X was thoroughly prepared to cover the quarter-mile run under 9 seconds. Chevrolet used the production engine calibration, which is street legal in all 50 states, and wrapped the sports car with Michelin Pilot Sport 4S standard tires. The model also ran on pump gas. And as you can see in the photos, the result spoke for itself: 8,675 seconds quarter-mile, at a top speed of 256 kph. The 60-mile run was also achieved in 1,68 seconds in less than 100 feet. Those figures are not abstract. They sit outside the current NHRA production thresholds.

The success of the high was achieved due to the maximum power of the Corvette ZR1X, which was 1,250 horsepower and 1,124 Nm of torque squeezed out of a mid-mounted twin-turbo LT7 V8 engine combined with an electric motor in the front axle.

Current NHRA regulations limit production cars to 9.0 seconds and 150 mph (241 kph) in the quarter-mile. The revised system allows 2014 and later OEM production vehicles to run as fast as 9.00 seconds and /or 150 mph/241 km/h (5.65-eighth-mile). OEM models from 2008 to 2013 have up to 10.00 seconds and/or 135 mph/217 kph (6.40-eighth-mile).

When asked about the situation, the NHRA stated it “would observe the car in its test configuration and be open to an opportunity to learn of its safety advancements.” That phrasing leaves room. It guarantees nothing.

Then there is pricing. The Chevrolet Corvette, ZR1X, has a starting price of $209,700, which means around $166 per horsepower. On the other hand, the ZR1 is priced at $185,000 and comes with 1,064 horsepower, and $173 per horsepower.

No other American production car currently matches what the ZR1X achieved on a prepared surface. Whether that triggers a rule revision or simply additional safety requirements remains unsettled. The speed is established. The regulatory response is not.

Corvette ZR1X – Photo Gallery