You don't need to stage turbos anymore. Two small turbos pretty much do away with any noticeable lag in cars these days - and provide plenty of power. 420hp will be easily achieved with two small turbos.
It won't weigh "a lot" less but it'll be 100 or 200 pounds lighter considering it'll be the 3.3 liter V6 and not the 3.8. Reduced weight will result in lower gas consumption and better handling attributes but the main benefit will be using much less gas when the turbos are not spooled. You'll have V8 power and torque all over the place - and use V8-like gas - when the turbos are spooling. Otherwise you'll be using a V6 just like an ordinary V6...
Not entirely true. Gas use will be much less when you're not spooling the turbos. A V8 is always drinking gas like a V8. A V6 does not until you are pushing the engine for performance. You'll easily save gas with the V6 and still have the V8 power when you want it.
Good sales job for twin turbos. 3.3 verses 3.8 will save a bunch of weight? Really? Is the 3.8 design not just a punched or stroked out 3.3? Is this "new 3.3" based off the 3.3 today? Making they displacement smaller on a same block design does not mean automatically lighter weight.
You still did not stop with the promotion of falsehood about weight of V8... Admitting that the example of the Coyote V8 weight being less than this new 3.3 turbo. The TAU carries many attributes of the Coyote. And I bet close to the same weight.
The added weight to the 5.0 is made up of glass roofs, all the other changes you suggested, and more.. Yes, and a some lbs added for the V8 verses a clean 3.8 (which is based on the 3.3?). Add all the turbo, plumbing, inter coolers, whatever, that V6 will weight within 100lbs of the Tau. Or may weight the same (using the Coyote example).
Look, I get it... You are a turbo V6 or 4 guy. Good for you. Quit trying to convince us of things that are just not so. And quit trying so hard to win the battle over V8 guys. The battle is won. Thanks to .gov and their weeny bully employees who skew the tyrannical environmental measurements to help the "tuner" engineers working at the car companies to end the reign of a good V8. In the meantime, I as a V8 fan (not exclusively) will call out the BS and do my part to have correct history relating to the V8 design.
And I suggest as many people as possible who ever had a inkling for a V8, to go and buy one. It is funny that government motors at least will in the future, keep a V8 for the elites. Those who can afford a CTS-V... Better yet, quit thinking about a Genny, and spend that money on a moderately equipped Z51 Corvette. Which has a EPA rating of 29.456 (approx) mpg. I know several owners who are getting 35+ on highway. Pushrods and all. One of the best overall performance handling and speed demons on the planet at any price. And more comfortable than most comparable competitors. One day soon, no back seat being required, that is where I will go.
In the end, if this vaunted 3.3 gen X environmental turbo turns out to be a more powerful, better sounding, and just better choice than a V8 could ever be, guys like myself are not prideful. We will buy them. Today, as announced, not the case.
