A bit more than that, but LS motors are light for their power. Full street dress is about 210kg. I’m sure you could shed quite a bit of that right a way (you don’t need things like power steering or an alternator.)

My initial response to that was to snear at the idea of F1 engines with push rods.

But in all honesty, you have to hand it to the old American V8, it is at a hell of a local maxima.

Limiting max rpm might also be one way to reduce F1 engine expense. A naturally aspirated engine with, say, a 10k max rpm limit.