GM Debuts New Architecture, DOHC 4.2L 550hp Twin-Turbo V-8

The engines will be hand-built at GM’s Bowling Green, KY, Performance Build Center, a part of the Chevrolet Corvette assembly plant where the Corvette … GM big cheese Marry Barra has been touting an “Accident free, emission free, traffic free future” for awhile now, so this news is a big sigh of relief for …

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