[camaro5]

4 valves per cylinder - welcome to a reasonably modern engine design.

Forced induction is taking over.

LT7 is rumored near 1000hp with electric motor assist.

[WhyUMad1LE]

Supposedly this engine is to be unique to Cadillac. We'll see how that plays out.

How important is it for Cadillac to have V-8 power going forward?
We will have a new engine family that is very highly modular and can be structured for four, six or eight cylinders, not only with performance in mind but it must perform better and be more efficient than the old engines.

I would guess the V-8 version would be exclusive to Cadillac.
I would want to work very hard to keep the architecture unique for Cadillac. On the other hand, I must also consider that there might be some other important markets and market segments where, if I chose to enter them with a unique Cadillac platform, the cost of entry must be so high that I can’t make it pencil. So then I have a choice — I either don’t participate, or I see what other assets exist within the General Motors portfolio. And I’ve learned this playbook from the Volkswagen Group. There will be some models that will be absolutely standalone, pure, thoroughbred Cadillac. And then there are some where we must make sure those cars capture the Cadillac values but where it might be OK to share componentry. I don’t want to use a brand name. But if another brand in the stable decides they want to use a Cadillac asset and they are willing to accept the higher cost that’s associated with the asset, that helps us amortize the cost.

http://www.automobilemag.com/news/in...n-de-nysschen/

[speedraider]

I'll stick with my wife's rs7.

[bobby35ny]

4.2 DOHC twin turbo making 550HP.
That don't seem so great, should make well over 600HP at that CID, no?
-Bobby

[shaffe]

Originally Posted by WhyUMad1LE

Supposedly this engine is to be unique to Cadillac. We'll see how that plays out.



http://www.automobilemag.com/news/in...n-de-nysschen/

I would think that some of the architecture/design for this engine is heavily shared with the upcoming mid engine Vette engines

[FringBirdAloha]

Originally Posted by unavailablezl1

Maybe this is on the way. Could be ZL1 or Z28. Who knows, but it is kick a$$

https://www.motorauthority.com/news/...ted-horsepower

If there is a Z28 this generation it will get the LT5.

[unavailablezl1]

Originally Posted by FringBirdAloha

If there is a Z28 this generation it will get the LT5.

Or maybe this like a similar was in the ZR1.

http://www.mercuryracing.com/automotive/



http://www.thedrive.com/video/14877/...ck-crate-motor

http://www.thedrive.com/video/11943/...-green-machine

[shaffe]

I would bet they would have to detune it quite a bit to make it pass emissions since in it's current set up it does not. Then IMO once you start detuning it, does it offer any advantage over the already in house developed LT4 or LT5

Right from Mercury

"However, due to emissions regulations, it is only certified to be used in 1976 and older road vehicles.
Rck"

[2K16SummitSS]

That Mercury engine is pretty cool, and I think they have the right idea. However, I think GM could take that idea and R&D it a bit further (if they aren't doing that currently) to come up with the right setup that passes emissions etc. I would like to see one good 4v setup by them, naturally aspirated, making good power and winding up to 8000 or better RPM safely, and going with 6.2 or larger displacement. I may be asking more than the red tape will allow these days.

[7WSM]

Originally Posted by RacerX78

The "Hot V" setup has been used my Mercedes in their F1 cars for a while with great success. I believe Audi was first to market with a production version of that setup in their S8 and RS7, followed by Mercedes.

In their road cars yes. But on the F1 engine, it still has the conventional V design where the exhaust comes out the side. Mercedes did engineer it differently as they split the turbo into 2 pieces. The compressor side is on the front of the engine, there is a shaft that runs through the V of the engine and the compressor is on the backside.

[RacerX78]

Originally Posted by 7WSM

In their road cars yes. But on the F1 engine, it still has the conventional V design where the exhaust comes out the side. Mercedes did engineer it differently as they split the turbo into 2 pieces. The compressor side is on the front of the engine, there is a shaft that runs through the V of the engine and the compressor is on the backside.

Yes i knew that, but didn't want to go into a full on "Engineering Explained" on here. There is a lot of tech that comes from f1 racing (CVT, DCT, etc) that is made more civil for production cars.

[unavailablezl1]

Originally Posted by shaffe

I would bet they would have to detune it quite a bit to make it pass emissions since in it's current set up it does not. Then IMO once you start detuning it, does it offer any advantage over the already in house developed LT4 or LT5

Right from Mercury

"However, due to emissions regulations, it is only certified to be used in 1976 and older road vehicles.
Rck"

The last GM motor from Mercury

http://autoweek.com/article/car-life...-marine-museum

[shaffe]

Originally Posted by unavailablezl1

The last GM motor from Mercury

http://autoweek.com/article/car-life...-marine-museum

Yeah they built the LT5 for the ZR1 in the 90s. Now the current SB4 is just a crate motor, and won't pass emissions. I was simply asking, at the amount you would have to detune it to make it pass emissions does it make sense to outsource an engine when you have the LT4/LT5 already available.

[unavailablezl1]

Originally Posted by shaffe

Yeah they built the LT5 for the ZR1 in the 90s. Now the current SB4 is just a crate motor, and won't pass emissions. I was simply asking, at the amount you would have to detune it to make it pass emissions does it make sense to outsource an engine when you have the LT4/LT5 already available.

I understand what you are saying. I am a Mercury Motor customer my entire life and anything they do is good. Seeing this and knowing the past, my hope that a version of this is secretly in the works for the N/A Z28. If it is even close to this, I would sell the ZL1 and get it. Redline is an 8000 screamer. I have had two 8k+ redline cars and high revs is the best for me.