Volvo appear to have 3 main engines and multiple versions of the same engine.
And I suspect that some ICE engines in use are still variants of pre war designs the Chevy Small Block v8 is a little newer starting mid 1950's
And I suspect that some ICE engines in use are still variants of pre war designs the Chevy Small Block v8 is a little newer starting mid 1950's
Perhaps, but I'm not sure how relevant that is. The only pieces that remain somewhat as they were would be the block, crank, and rods.
Overhead cams, variable valve timing, aluminum heads/blocks, electronic ignition, fuel injection, ECU, etc...are all newish.
If some other design (rotary engines, for example) were better and made economic sense, they would have likely won out.
...and not used since 2003. Honestly, it's probably best to view an engine family like this as a form factor, not a design. It isn't like there were any 1955 parts in a 2000 engine, but the interconnects are (mostly) the same. Generally, any 90 degree V8 with a cam in the block is going to be the 'same', designers have pretty much standardized on just a few layouts.
An invariant SBC is like saying disk drives haven't evolved if they use the same mounting points and cabling/logic standards.
https://en.wikipedia.org/wiki/List_of_Volvo_engines
I thought they only produced the 2.0L 4 cylinder petrol in various configurations (turbo size, hybrid, non-hybrid). As it turns out they now also have a 3 cylinder engine.
Yes they have 4 wheels, wind screen, engine, but reliability is massively different, power is massively different, comfort, crash safety, price (for what you get).