How much HP can a M156 handle?
Right out of the factory, the M156 delivers serious performance. With outputs ranging from 451 hp to 518 hp (depending on the model) and 443 to 465 lb-ft of torque, it brings a level of power that is hard to beat for the money. Both engines represent different approaches to achieving similar acceleration performance targets. The LS7 relies on higher revs, lighter reciprocating mass, and a more focused sports car application, while the M156 leverages greater torque production and versatility across vehicle platforms.
Is the M156 naturally aspirated?
The engine was designed to be a naturally aspirated racing unit, and is also used in a number of high-performance AMG-badged Mercedes-Benz models. The Mercedes-Benz E63 AMG was a silhouette touring car built to compete in the V8 Supercars championship.
What is the difference between the M156 and M159 engine?
The M159 engine is a high-performance derivative of the M156, featuring a redesigned intake system, revised valvetrain and camshafts, and a completely different exhaust system. Mounted in a front-mid configuration in the SLS AMG, this engine is truly a masterpiece from Mercedes-AMG. It would be rare for lower end M156’s to be junk (three of them! The weak spots on these motors is on the top side – camshafts and head bolts and intake manifolds. They need to look a little more.