Z28x

http://www.autoblog.com/2009/05/26/g...-up-to-60-mph/

Take a 300HP 29mpg Camaro and up the economy 15% and your now at 33.3%. Drop 200-300lbs. and you got a 35mpg+ EPA rated Camaro with 300HP that is faster than an LT1.

Darth Xed

That'd be great a great scenario for the base model, but what about the SS or even Z/28?

If this were to be the performance model, it'd quite a let down considering this would be a 2015 model year car vs the performance of a similar car from model year 1993-1997, or basically 20 YEARS older at that point.

Z28x

Even a 20% improvement in a Camaro SS would give us an EPA rating of ~30mpg, 400HP in a lighter car. We can't expect 1/4 mi. times for SS Camaros to keep dropping 1 second every generation until they reach zero. A base SS should also cost less than a base CTS in my mind.

Darth Xed

I don't know that significant weight loss can be assumed, though, either.

I think we've all learned that less wieght = more money...

Add to that a moer reasonable presumption of additional weight on future cars to meet future crash standards, etc, and I don't know that all of it adds up.

That said, more MPG with additional power is a great thing...

Z28x

I think what we will start to see is more MPG with the same HP vs. same MPG with more HP like in the 90's-late 2000's. Either way it is a good thing.

SSbaby

It's definitely a beautiful looking engine!

95redLT1

Is that 15% more than a DI engine?

Mustang Killer57

Why so long to market? Shouldnt Gm be putting this engine out in say 36 months or so????

bossco

I dont think GM is interested in tarnishing thier image already more than it has been. Rushing rough around the edges tech for the sake of "hey look at me" is a disaster in the making.

R377

Last I heard, there's still a lot of development work to be done in terms of NVH, driveability, emissions, and managing the transition between HCCI and spark ignition. It's one thing to have a prototype in the lab to demonstrate the feasibility of a concept; it's quite another to 'idiot proof' it for production and have it run reliably for 100k+ miles in all kinds of conditions, environments, and levels of abuse.

Mich84

New engine development and certification is a massive process. Just getting prototype parts can take 18-20 weeks.

Geoff Chadwick

I've heard bits ranging from 10% to 20% depending on engine (I4, V6, V8, turbo vs non-turbo). But to answer your question, it is quite possible, though the "final" numbers are far from printed.

Along with what R377 said, there's just the simple fact that you even have to train mechanics to work on these engines. These engines are intense, and will blow the pants off GMs current DI and DI turbo engines in terms of emissions, mpg, and power.

Last I also heard, HCCI is NOT on the plate for the Gen V V8 (which will have DI) but rather possibly Gen VI.

Chrome383Z

The only thing that blows about this engine tech is I highly doubt they will be able to be modded.

No tuner would get within 10 miles of one of these things if he doesn't want to get sued when the engine blows up.

Chrome383Z

I wouldn't use it on the V8s at all. Put it in passenger car engines that need more MPG. V8s are pretty much going to be limited to HIGH performance cars and BIG (3/4 Ton+) Trucks in the future. No need for this on those... IMO