Automotive & Performance Blog

Posts tagged “LFX

Cadillac unveils new car with intriguing power plant…

Just a few days ago Cadillac unveiled a new concept car called the ‘Ciel’. It’s a beautiful car, but I’m not reporting this because of the car so much, as I am reporting it because of it’s power plant. The new concept is powered by a Hybrid Twin turbo V6, that’s right, I said HYBRID twin turbo V6. The power plant is a variation on the 3.6L Direct Injected V6 that is in the CTS and Chevy Camaro as well as a few other GM vehicles. I have not seen any where in my research if it’s based on the LLT or LFX version of the 3.6L (see this for more info on the two). The new twin turbo engine reportedly produces 425 hp and 430 lb-ft of torque. That’s quite impressive for a V6, especially on a hybrid engine.

One can only assume that this is another step in GM’s pursuit of performance while meeting the new more stringent CAFE standards. GM has already announced that they’ll be introducing a twin-turbo V6 option for the 2014 Corvette. Just speculation, but I’m willing to bet that engine will make it’s way to other GM performance cars such as the Chevy Camaro and Cadillac CTS.

Current V6 Camaro and CTS owners should rejoice in this news as it very well may mean a GMPP twin-turbo upgrade option in the near future. The best part being it wont void warranties, as it is a GM product, for those out there that worry about that kind of thing while modding. Very exciting news indeed that you can have a twin-turbo V6 that gets 30 MPG while putting out the same HP as the big brother pony car, the SS Camaro.

Here is the official press release on the new Cadillac Concept:

“PEBBLE BEACH, Calif. –   Cadillac today unveiled the Ciel concept, an elegant, open-air grand-touring car inspired by the natural beauty of the California coast.

The Ciel – pronounced “C-L,” the French translation for sky – is a four-seat convertible that opens a new chapter in Cadillac’s design and product ascent, pushing the brand’s Art & Science philosophy into a new stratum. Ciel is a new expression of Cadillac’s historical grandeur, as well as a celebration of open-air motoring.

“Large, expressive luxury is innate to Cadillac and the Ciel recalls that heritage, while suggesting where the brand can go in the future,” said Clay Dean, global design director for Cadillac. “Authentic luxury is driven by experiences, not just products, and Ciel is about the experience of the journey.”

The spacious and elegant Ciel is a grand gesture that explores themes driving Cadillac’s explorations into range-topping flagship luxury. It is powered by a twin-turbocharged version of the 3.6-liter Direct Injection V-6 engine, paired with a hybrid system using lithium-ion battery technology.”

The new Cadillac Ciel Concept.


Bowtie V6 Store Launches!


   SO, I’m a staff member of a really awesome forum called bowtiev6. It is a 5th Ge. V6 Camaro forum and if any of you guys out there even remotely like the new generation of Camaro you should check it out. The web address is

With that said, I just launched the new BowtieV6 Store! It is a store that caries apperal, decals, license plate frames and other various items related to bowtiev6 and all things V6 Camaro. So swing on in and check it out. It can be found at or you can click the image below:


Chevy Announces LFX V6 engine.

News is a few months old, but I figured I’d post it up here. Only two years after releasing one of the most potent engines in the 3.6L LLT V6, GM and Chevrolet announced that the 2012 model year will receive a new engine. Here’s the nitty gritty of it:

The new engine option description is: “LFX 3.6L SIDI, DOHC, VVT, E85 MAX, Alum GM

The LFX should displace 3.6L, like the current V6 found in the Camaro. And it’s packed to the brim with advanced technologies like Spark-Ignition Direct-Injection, Dual Overhead Cams, Variable Valve Timing, and E85 capability!!

Those are the hard details…but a little research raises some other interesting points. It is likely that the LFX is going to build on the innovations of the 3.0L LF1 V6 found in vehicles like the Cadillac CTS, SRX, and Chevy Equinox. That engine features a composite intake manifold, integrated exhaust manifolds and optimized NVH/airflow treatments.

When the LLT was transplanted from the CTS into the Camaro, it picked up 8hp, or 2.6% because of different intake/exhaust efficiencies. The LF1 produces 270hp in 3.0L form in the CTS. If we scale up the displacement of the 3.0L engine to 3.6L, and use the same 2.6% power increase as the LLT, estimates have the new LFX producing anywhere from 325-330 hp when used in the Chevy Camaro.

The new LFX cylinder heads

A comparison between the LLT & LFX heads.

Here’s an excerpt from the latest press release on the new engine:

PONTIAC, Mich. – In auto production, more power, better fuel economy and fewer emissions rarely appear together. But the 2012 Camaro 3.6L direct injection V6 engine achieves all three by combining the exhaust manifold with the cylinder head into a single aluminum casting.

Each integrated exhaust manifold cylinder head – a V6 has two — replaces a cast iron exhaust manifold, six bolts, a gasket and a heat shield and three bolts. By eliminating this joint, the potential for a gasket failure is eliminated. And the change reduces engine weight by 13 lbs. or 6 kg per engine. Reducing mass helps improve fuel economy and the 2012 Camaro 2LS model is EPA estimated at 30 mpg highway.

“Reducing engine mass of this magnitude doesn’t happen often,” said Ameer Haider, GM assistant chief engineer for V6 engines. “Engineering usually looks for reduction in terms of grams not pounds. It’s just like removing a set of golf clubs from your car when you don’t need them – ultimately it saves fuel. When combined with other mass reductions, the customer will see better fuel economy over time with better performance.”

Extensive simulation and bench testing was performed to perfect cylinder-head airflow. Intake airflow is improved 7 percent with the use of larger intake valves (38.3 mm v. 36.9 mm), which are primarily responsible for an increase of 11 horsepower. Exhaust flow is 10 percent better than the previous V6. 

Lower emissions, narrower engine size and noise reduction round out the list of benefits for the new head design. With the catalytic converter closer to the engine exhaust point, the emissions reduction process begins sooner, resulting in lower emissions. The new cylinder heads decrease the overall width of the engine by 4.6 inches (117 mm) for significantly more packaging space in the engine bay making under hood work easier. Due to less surface area, the new design contributes to a 1 decibel reduction in engine noise at idle.

“The new, patented design benefits the customer in all the key areas without any trade offs, said Haider. “Emissions, performance, fuel economy, and noise all improve with the integrated exhaust manifold.”

The new engine is essentially just head redesign, so theoretically the new heads should be compatable with the LLT and in turn a nice performance mod for those with the LLT trying to get a little more out of it.