rmorin1249

From Motor1.com:

Sorry, Corvette.
Cadillac may be unsure about the future of its CT6 flagship sedan but it definitely knows what it won’t do with the engine of the series’ range-topper. The CT6-V uses a 4.2-liter twin-turbo V8 engine which is also shared with the CT6 Platinum but this motor will remain exclusive to the Cadillac brand.

When asked whether the marque is open to sharing the so-called Blackwing engine with other automakers under the General Motors’ umbrella, Cadillac’s President Steve Carlisle was pretty direct. "Over my dead body," he told MotorTrend in a recent interview. That’s what we call a solid statement.

Last week we learned Caddy has plans to build more CT6-Vs, though exactly how many examples will be made is unknown at the moment. Oddly enough, the manufacturer will sell the new portion of performance luxury sedans at a higher price than the first batch of 275 units. More precisely, the price goes up from $88,790 to $92,790.

Kevova

Being the President of Cadillac hasn't shown to have long term security. If Cadillac continues to struggle he won't be around long.

BIG Dave

Oh good! Another Blackwing thread!

https://www.corvetteforum.com/forums...c8-engine.html

https://www.corvetteforum.com/forums...eculators.html

jcthorne

The caddy version has a hot v arrangement with the turbo up top. The C8 version has the heads flipped with the exhaust on the outside in a conventional arrangement. While the two engines share a great deal, they are 2 different engine series. Caddy has theirs and Corvette has their own....even if the blocks and heads are the same just bolted together differently.....Both statements are true.

RapidC84B

They will not develop a whole new platform just for Caddy... I don't care what they say. They'll flip the heads and put the turbos on the outside and call it something else, but it will be the same engine platform.

roadbike56

Cadillac's high performance track record:
Cadillac Allante. Although planned while the Fisher body works was still in operation, it went into production after the Fisher body works was shuttered. The bodies for these cars had to be manufactured in Italy and flown to the US via a specially built 747. Because of this, the cost for the Allante in 1987 was very high, $54,700 or $122,000 in 2019. After 7 years and just over 21,000 units, the Allante was put to pasture. Cadillac lowered prices until they were losing money on each unit to try to get the car to catch on but it never happened.
Cadillac XLR. Cadillac inherited some left over C5 frames and went into the sports car business in 2004 with the XLR. These cars were assembled in Bowling Green in the same plant as the Corvette C5 and then the Corvette C6. The concept was great. A proven frame with excellent handling with a new, good looking skin and nice options. What could go wrong? Well, Cadillac in their infinite wisdom stuffed the Northstar V8 in the Cadillac, the very same engine the C5 Corvette designers turned down and hoped they would not be stuck with (as per All Corvettes Are Red). All this while the reliable LS1 and LS2 engines were readily available and would have required less development. The XLR would last only 6 years but along the way Caddy would add a supercharger to the Northstar to boost it to 443 HP, but with a price of $110,000 or $138,000 in 2019. Despite somewhat impressive performance data in the quarter mile, the XLR didn't sell enough to keep it on the market and was gone in 2009.
Cadillac CTS-V Wagon. The one success Cadillac has had is the CTS-V. But it could have been a smashing success making it a star in today's market. Cadillac produced a CTS-V wagon for a few years. With a little foresight, Cadillac could have been on the leading edge of the high performance SUV market. Instead, they clutched defeat from the jaws of victory and cancelled the CTS-V wagon.
I have absolute confidence that Cadillac, if given the ME platform, will find a way to screw it up.
Maybe GM should just give them the old C7 platform, this way it won't matter if the mess it up as Corvette will have been done with that design.

jimmyb

^^^^
In fairness to GM, the CTS wagon didn't sell because very FEW wagons sell. There's a reason BMW and Audi no longer import wagons to the U.S.

jvp

Rose-colored glasses, for sure. The wagon was a car that only a couple of very vocal people in the press and a few other place actually wanted. It sold: like crap. It was a mistake to make; fortunately it didn't cost them a whole lot to do so. Believe me: no one at HPVO wanted to build that PoS.

And that's exactly what it was: a PoS. And why it wasn't continued into the third gen car.

PCMIII

If the ME Corvette uses the LT4 and/or LT5, the Blackwing is irrelevant. Why settle for a less powerful, more complex engine when you already have the two best engines GM makes?

jvp

The concern will be: whether they could meet today's emissions and tomorrow's?

BEAR-AvHistory

Would not be surprised to see the heads flipped & the displacement increased. Don't know how much meat is on the block have not seen any pictures of the cylinder bores, but 4.4L is an easy 600+BHP. Too much money gets sunk into all new engine development today not to use it elsewhere.

Tom73

There has been a lot of speculation that Chevy will retool the heads to reverse the flow but I have not seen anything to confirm this. Your statement sounds like it is a done/confirmed deal. Can you provide links?

PCMIII

Both engines are legal now in cars that are likely heavier so at least as launch engines, they would definitely rule the road. Corvette would want Chevy engines instead of Caddy, and both engines are tried and true. Certainly would be exciting to drive.

bigsapper

Or the ME is a Caddy?

jvp

It doesn't matter if they're legal now. They need to be legal now AND legal tomorrow.

JoesC5

Bore centers are 3.780" and the bore is 3.390". That leaves .390" of "meat' between the cylinders. At 20 psi boost, reducing that by increasing the bore to get more displacement would not be a good idea. The stroke is 3.550" and could be increased, but that wouldn't give that much of an increase in displacement. Besides, you don't really want a long stroke at high RPM's and maintain a warranty.

The engine was designed to be 4.2L, and is not a physically larger engine with a smaller bore and a shorter stroke to get it's 4.2L displacement.

It possibly could be stretched out to 4.4L but would also need additional boost to get 600+ HP. The present 6.2L V8 is already available with 755 HP, so why do we need another engine to produce less horsepower.

jimmyb

Well, that's just silly...the CTS wagon was hardly a POS, it was a very nice car (I had one), but there's only 8 folks that want "long roofs"....the lack of imagination herd wants SUV's.

TRANS DAMM

do you expect caddie to put out another coupe or have they moved away from that as well?

roadbike56

Only if Mary wants to join Jon on the unemployment line.

BEAR-AvHistory

Yeah 755bhp does good for bragging rights but is also traction limited. I would guess something around 550/600 gas to the rear & another 100/150 or so electric in the front for an AWD car.

That said for whats its worth Blackwing is a turbo engine & does not appear to be designed to rev with its 550BHP coming in at 5700rpm. That's why I was looking to the bore for any displacement increase.

Its also been suggested that Blackwing is to be a family of engines in different sizes.