Originally Posted by swamp2
And we have your continued insistence, more or less that 1>2. Apples to apples there is simply no way the 6.2l AMG V8 weighs less than the 4l BMW V8. Same basic layout, same basic OHV/OHC layout, same number of valves, same basic materials used and viola the physically larger engine weighs less.
Maybe his "continued insistence" was based on facts. All information comes from manufacturer's own press releases.
M156 6.2 liter V8 - 199kg
S65 4.0 liter V8 - 202kg