Disagree. I can totally separate it from the car and have. A variation of this engine will also be used on the T30. Just like I can seperate the McLaren V8 from the car and judge it for what it is. In fact, Mclaren's engine won engine of the year a few years back. So not only can I, it's done by professionals. Ricardo congratulates McLaren Automotive on International Engine of the Year AwardYou can't separate it from the car. The design of the engine is integral to the goals of the car overall. This is exactly my point that it's a false comparison, the GM engine designers were given an engine goal, the Cosworth designers were building an engine to the design parameters of the complete vehicle. Are you saying you think Cosworth couldn't have designed a V12 with the same displacement as the C8Z but with more power? The T50 is really not much different from designing an F1 car, there's a reason Mercedes as been so dominant for so long, because they manufacture both the engine and the chassis.
I don't know what Cosworth could or couldn't do. That's moving the goalposts. I know what they did. I judge them by their actions and product. And the product is meh relative to the C8Z engine.