Manage updates with the Download AppMercedes-Benz AMG: SLS Black beauty and the GL63 beast (pictures)
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Although it uses the same 6.2-liter twin turbo direct injection engine as the standard SLS, AMG squeezed another 39 horsepower out of the engine for a total of 622. The tuner division upped the redline to 8,000rpm and fitted a higher-performance valve train to get the extra power.
November 28, 2012 9:29 PM PST
Photo by: Josh Miller/CNET
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