A monstrously powerful turbocharged diesel V8 engine/generator set based on a dream I had three years ago.

Going by the dream's lore, the Monster V8 apparently is;

Extremely loud. The massive twin turbochargers emit up to 170 decibels.

As large as a diesel locomotive (30 meters), rivalling the Wartsila RTA96C ship engine in size but is not as heavy to permit a higher RPM. Too large for a Civic.

Produces a massive cloud of black smoke at max RPM that is 1 kilometre high and is 20 times more polluting than a cow burping and a smoke billowing factory combined. As a result, the V8 typically only runs at 800 RPM.

Runs to 1260 RPM at the absolute highest, far higher than any engine comparable to its size due to its specialized pistons and advanced crossplane crankshaft.