"AMG 6.3-litre V8 engine is the first in the world to combine the high-revving concept with a large displacement"
Interesting, but I think they need to look into Oldsmobiles success with hi revving large displacement engines.
Is 8500rpms from 7 liters enough?
Aluminum 4 valve 455 Hemi (OW-43)
There was an experimental engine based on the W-43, coded OW-43. It was designed for road racing applications. It had the same basic configuration as the W-43, but the materials were different. The block was cast from Reynolds-356 alloy and fitted with pressed in dry steel cylinder liners for the forged 12.2 to 1 pistons. It used billet steel connecting rods and a machined forged steel crank.
The OW-43 was developed at the same time that Chevrolet released its all aluminum ZL-1 427 engine, but the Olds engine was far more advanced and exotic than the Chevrolet engine. It had a redline just under 8500 rpm, and put out 300 HP at 3000 rpm, and 600 HP at 6000 rpm. The top output recorded for this engine at the Lansing dyno facility was 700 REAL horsepower at 6800 rpm. Tests were run with both carburetion (four Weber 48-IDA two barrels) and injection (three-inch ram stacks), with injection showing the most potential over 6000 rpm.
The engine was engineered to be reliable for street car use,and it was planned to offer it as a factory option.
However, GM's marketing plans changed and it was shelved.
The same motor today with modern digital engine controls would produce shocking amounts of power.
A updated version of this engine is being looked at by GM as a option for the next generation of the Corvette that is coming sooner than people expect.
If they can just learn how to build a steering rack that gives precision feel they would have a real car.