First eight-cylinder for the BMW M3.
420 hp from 4.0 litres.
Maximum torque of 400 Newton-metres (295 lb-ft) at 3, 900 rpm,
85 per cent of maximum torque over a speed range of 6,500 rpm.
340 Newton-metres or 251 lb-ft available from just 2,000 rpm.
Maximum engine speed 8,300 rpm......
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