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Discussion Starter · #1 ·
Face it, the industry is slowly downsizing engines and chances are the next Chevy SS/Chevy performance sedan will more than likely get a V6, without a V8 option.

If it gets a V6, what better than the twin-turbo 420 horsepower and 430 torque engine found in the new CTS and XTS.

Cadillac released new information about the 3.6-liter twin-turbo V6 to be found in its new CTS and XTS Vsport sedans.

The engine makes 420 hp and 430 lb-ft of torque thanks to its two turbochargers. Output was first announced ahead of the New York Auto Show in late March, but now the brand is discussing the powerband. By using small turbochargers and a top-mounted throttle body, the brand says its engine will offer peak torque from 1,900 rpm all the way to 5,600 rpm.

“By creating a very short path from the turbos to the throttle body, the compressors are able to draw air directly from the inlet box and send pressurized air through the intercooler immediately,” said Richard Bartlett, Cadillac assistant chief engineer for the 3.6L engine. “This gives the driver a more immediate feeling of power on demand.”

Turbo lag — the time it takes for a car to circulate sufficient exhaust fumes to spin the turbocharger — used to be a more prevalent issue, but especially among luxury cars it is all but gone. By using two or in some cases even three turbochargers of varying size, manufacturers are able to almost completely eliminate perceptible “lag” before the turbo can cram more air into the engine.

Cadillac will begin delivering both the CTS and XTS Vsport models this fall.
 

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I think you can pretty much count on turbo's in SS cars and Camaro's in the next gen....
 
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Discussion Starter · #3 ·
I think you can pretty much count on turbo's in SS cars and Camaro's in the next gen....
Yeah, they'll still need to have these cars live up to what they originally were, no other way to downsize and keep power levels where they should be.

With that a lower center of gravity with a more balanced vehicle will help.
 

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Face it, the industry is slowly downsizing engines and chances are the next Chevy SS/Chevy performance sedan will more than likely get a V6, without a V8 option.

If it gets a V6, what better than the twin-turbo 420 horsepower and 430 torque engine found in the new CTS and XTS.
Yes there will be turbo motors, but there still we be available V8s. Its a given that the alpha Camaro will have V8s. The next CTS-V on alpha will also have a V8. If the SS is going to continue to appeal to muscle car and NASCAR enthusiasts, it will have a V8.

I don't think the twin turbo V6 will end up in any Chevys. My guess is we'll see it only in Cadillacs (ATS-V, CTS V-sport, XTS V-sport, and most likely the Omega flagship) and Buicks (rumored alpha GNX).
 

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Yes there will be turbo motors, but there still we be available V8s. Its a given that the alpha Camaro will have V8s. The next CTS-V on alpha will also have a V8. If the SS is going to continue to appeal to muscle car and NASCAR enthusiasts, it will have a V8.

I don't think the twin turbo V6 will end up in any Chevys. My guess is we'll see it only in Cadillacs (ATS-V, CTS V-sport, XTS V-sport, and most likely the Omega flagship) and Buicks (rumored alpha GNX).
good point about the NASCAR appeal. I think the Camaro could get a turbo just to keep pace with the Mustang, performance figures and lap times could be very similar but if the Mustang creams the Camaro in mpgs it could be dead in the water right there.

The SS could also adopt a strategy offering a V8 and a blown 6, just let me row it please.
 

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anything on the omega platform with a 6 cylinder engine even with turbos will be a pig.
i can see anything bigger than the xts getting a v6, that to me is where it stops. unless you have some solid info on this?

keep in mind, one of the omega platform vehicles, the cadillac LTS that sits above the XTS will have to compete with the Mercedes S-Class
 

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anything on the omega platform with a 6 cylinder engine even with turbos will be a pig.
i can see anything bigger than the xts getting a v6, that to me is where it stops. unless you have some solid info on this?

keep in mind, one of the omega platform vehicles, the cadillac LTS that sits above the XTS will have to compete with the Mercedes S-Class
You think a 420hp/430tq engine is a pig? Have you seen the torque curve on new turbo motors these days? They're as flat as a table top. Also, you do realize that base S class has 382hp/391tq and the base BMW 7 series ONLY 315hp/300tq. A NA V6 would be pushing it in the Omega car. I can easily see the 3.6 TTV6 being the Omega base engine unless GM develops a smaller turbo 6 in the mid 300hp range.
 

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good point about the NASCAR appeal. I think the Camaro could get a turbo just to keep pace with the Mustang, performance figures and lap times could be very similar but if the Mustang creams the Camaro in mpgs it could be dead in the water right there.

The SS could also adopt a strategy offering a V8 and a blown 6, just let me row it please.
The rumor so far for the Mustang is a turbo 4, V6 and V8s. The turbo 4 is also rumored for Europe only.
 

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Hands off my V8. If I want turbos, I will ADD them to my V8. Thank you.
LT1 is getting 29mpg according to the EPA, and will do 30+ in the real world.
 

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1k Rider, what do you currently own and drive?
 
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Cadillac’s LF3 Twin-Turbo V6 Aims To Make Turbo Lag A Thing Of The Past: Video

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With a top-mounted throttle body, a straightforward airflow design, smaller turbochargers, and top-mounted intercooler, the new LF3 engine — which will debut in the 2014 Cadillac CTS VSport and XTS Twin-Turbo — promises peak torque between a very broad 1,900 to 5,600 rpm.
Overall, air flow routing volume is reduced by more than 60 percent when compared with a conventional design that features a chassis-mounted intercooler. The water-to-air cooler system achieves more than 80 percent cooling efficiency with only about 1 psi (7 kPa) flow restriction at peak power for fast torque production. By doing so, the engine’s compressors are able to draw air directly from the inlet box and send pressurized air through the intercooler immediately.
For the upcoming CTS VSport, the 3.6L V6 LF3 pushes out an SAE-rated 420 horsepower (313kw) and 430 lb-ft of torque (583 Nm), and a little less for the XTS Twin-Turbo. Those numbers are good enough to best the larger 4.4L TwinPower V8 from BMW in the 550i.


Read more: 2014 Cadillac CTS VSport LF3 Twin-Turbo V6 Video | GM Authority

 

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Discussion Starter · #17 ·
I can fab shops stealing Cadillac's patented engine air flow design used here, would be risky for another car maker or aftermarket part company to create their own based on this.
 

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don't hate on 6's! they can be amazing, from the right brand.
If they tune the ATS-V engine to LT-1 power levels, it will probably be the better performer. The LT-1 torque curve is pretty good, but a good turbo motor will have a flat torque curve and therefore more power throughout the rev-range. I'd still prefer a V8 though - can't beat the sound.

I can fab shops stealing Cadillac's patented engine air flow design used here, would be risky for another car maker or aftermarket part company to create their own based on this.
That intake was designed with many many hours of engineering and computer simulation work. Good luck doing that on your own.
 

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If they tune the ATS-V engine to LT-1 power levels, it will probably be the better performer. The LT-1 torque curve is pretty good, but a good turbo motor will have a flat torque curve and therefore more power throughout the rev-range. I'd still prefer a V8 though - can't beat the sound.


That intake was designed with many many hours of engineering and computer simulation work. Good luck doing that on your own.
before it was superchargers that would be the solution to a flatter torque curve throughout the rev range, apparently the newer turbo's from car makers are delivering supercharger-like power distribution, which is probably just a matter of the right mix of everything
 

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I agree with bahamatod about the alpha platform should be only sporting the V8s. I can't really see the Camaro in a turbo 6 form. well not unless I get to see it in person but it will be confusing to all the old timers who are use to the v8s.
 
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