I don't know who at GM was spouting off, but they were nuts to do so.
The only V6 that GM has that would be acceptable is the 3.6l used in the Camaro and Caddy CTS. Problem... it's too big to fit under the hood of the C6; so who says it will fit under the C7?
It is simply too tall, too expensive to make and too heavy. It makes me wonder why GM didn't offer the Camaro with the 5.3l V8 as base?
The 6.2l V8 is lighter, more compact and nearly as power dense as the 3.6l V6, and gets nearly the same MPG. So why bother?
Oh, and these words come from Harlan Charles, as told to me in a one-on-one at Sebring last year. This isn't the rantings of some kook!! Cause I asked him the exact same question.
As for why V8 numbers are down? Repeat after me: Big SUV's are unsellable.