[syr74]

Originally Posted by comiskeybum

Well for one thing they are lighter in weight.

So a 3.8L V8 would absolutely be heavier than a compable, in terms of design and tech, 3.8L V6? This simply isn't true as an absolute by an means, there are far too many other variables for anybody to make such a broad, sweeping statement.

Originally Posted by comiskeybum

But hey man im not a mechanic or an engine expert. But everything i read in motor trend and other magazines (popular science........etc) says that very little cars will offer v8's in the future.

All the usual suspects predicted the same thing once before, and they were wrong then too.

Originally Posted by comiskeybum

But why bother with the pure weight when a v6 can make the same HP? and a turbo 4 can make same power as old v6's ? and so on..........and as a rule......the more cylinders you have........the more gas you use.....there is no way around that.

A greater number of cylinders doesn't inherently increase fuel consumption, displacement does. In fact, while this too is an issue far too complicated to paint with simple absolutes, there are more than a few arguments for a greater number of cylinders...within reason.....increasing fuel economy given similar displacement. Part of Ford's reasoning for the Triton V10 series of engine was that greater control over the combustion process would allow a 6.8L V10 to knock down better fuel economy and emissions than a comparable 6.8L V8.

In the end, you are still missing the point. There is absolutely no reason why a 3.8L V8 wouldn't knock down fuel economy on par with a technologically similar 3.8L V6 all else being reasonably equal. Engines are changing, and they will be getting smaller on average with a question, but the best run and ultimately most profitable companies are going to be those who figure out how to give the consumer what they both want and need in one package.

And to that end, it will likely be the companies who figure out the beneficial little incedentals, like the reality that there is no reason why a planned 3.8L GTDi V8 wouldn't work just as well as a 3.8L GTDi V6, who will win the day.