A BMW M4 Coupe driven by some UK journalists is being chased around the famous Nurburgring race track. The chase car? A Corvette Z06 equipped with the largest-displacement small-block ever produced, a new 7.0 L (427 cu in) engine codenamed LS7. The LS7 produced 505 hp (376 kW) and is the most powerful naturally aspirated engine put into a production car from General Motors.
The Z06 weighed 3,130 lb (1,420 kg), giving it a weight to power ratio of 6.2 pounds per horsepower (3.8 kg/kW).
With heavy use of lightweight materials, the BMW M4 Coupe slashes the kerb weight by 83kg to 1497k (3300 lbs) when compared to the predecessor E92 M3; for the manual transmission. The M-DCT gearbox adds 40 kg over the six-speed manual.
The M3 and M4 are powered by the S55 3.0 liter inline-six TwinPower engine producing 425 horsepower and 406 lb-ft of torque. The power is sent to the rear-wheels via a six-speed or an optional 7-speed M DCT transmission.
Here is the 9 minutes chase: