In my personal opinion, based on only a few decades of automotive industry experience,
Big Block SI are Gone.
Engine Fact = Air is horsepower.
If you have a little engine and use a blower to put more air in, it is all the same air.
The problem used to be cooling. Passcar people followed the lead of big engine guys and added the cooling so the boosted engines can live a while.
Engineering Fact:
A clean sheet engine development program is fast at 208 weeks. (That was one fast program and it took us 4 whole years.) I don't even want to think what it cost, but the phase 0 development engines (all the parts done on prototype tooling were a little over 250K$ EACH and not all of them could be used and a some died way early (or were murdered by operator error).
Diesels with:
After treatment,
Computer controls, and
New injection systems -
Are what you will see for the near term.
Diesels will get smaller and you will see diesel electric drives as batteries improve.
The above are all personal opinions and arguments are accepted.
Matt
