New 2012 R172 SLK55 AMG will receive a M157 V8 variant with no turbos, 416 horsepower from 5.5 liters
Well, the rumors about the new naturally aspirated 5.5 liter were true. The SLK55 will be getting an M157 5.5 liter variant but it will be missing the twin turbos. Bummer? We think so, but we all know the reason for it. The SLK with the twin turbo V8 would have simply stomped everything else in the lineup silly so this move is really to protect the other cars. A detuned twin turbo motor that could be uncorked similar to how the detuned C63 can be opened up with a tune is what we would want but this should still be a good amount of power.