[supra93]

http://www.carscoops.com/2017/02/201...se-700-hp.html

For months, it was thought that prototypes of the recently-revealed Chevrolet Camaro ZL1 1LE were of the next Z/28. However, at the Daytona 500, Chevy proved us all wrong when it unveiled the high-performance 1LE package for the ZL1.

Fortunately, hopes of a Z/28 based around the sixth-generation Camaro are still very much alive and if the latest speculation proves correct, it could be worth the extended wait.

Car&Driver claims that the new Z/28, potentially arriving for the 2019 model year, will go one step beyond the ZL1 1LE and could feature a naturally-aspirated V8 engine delivering a dizzying 700 hp.

It is reported that this new engine, dubbed the LT6, will be joined by a new twin-turbo LT7 V8 when the 2018 C7 Corvette ZR1 launches. Although there’s a possibility the Z/28 could feature either of these two, the all-motor option is being favored. Whichever engine is selected, it will feature an aluminum block and head, four-valve combustion chambers, direct fuel injection, titanium connecting rods, a flat crankshaft and displace approximately 5.5-liters.

It is logical that the new Z/28 will also be lighter than the ZL1 1LE and adorned with even bolder bodywork to make it the ultimate Camaro track weapon.

[WhatsADSM]

Originally Posted by supra93

http://www.carscoops.com/2017/02/201...se-700-hp.html

This would be really the only way I could see it making sense.

Basically an N/A engine would have to be developed either to be used in another application (along with the Z/28) or as a relatively simple variation of another model. There just aren't enough Z/28s to be sold to justify the cost of R&D and tooling for a new N/A engine for just the Z/28... you need some form of economy of scale. Add on top of it the fact that natural aspiration is going the way of the dinosaur and the fact that the ZL1 1LE is already occupying a similar space in the market. I believe that the above link is nothing more than speculation at this point.

[supra93]

http://www.autoguide.com/auto-news/2...irst-time.html

[TSM330i]

Here's another "update" on a possible Z/28. Seems I may have been wrong, but it's still speculation.
http://www.thedrive.com/opinion/8010...uessing?xid=hl