Yeah, i gave up on this thread awhile ago. It turned into flying vacuums and telling me how long my engine was going to last (as if someone who has no idea how i maintain it and how i treat it knows better than me). Advice is appreciated but not when its not requested and had nothing to do with the subject on hand.
For those of you who do care about the thread subject...
This looks to be a smart swap as of now and with time this will only prove itself. This motor being so new everything is very hush about it. But this motor will be taking on a huge role.
GM is looking to make this motor the new golden child V6 and is heavy into development with it. They are trying to duplicate what they had with the 3.4l and 3.8l. They are trying to accomplish this with the 3.0l taking the 3.4's place and the 3.6l taking the 3.8l place. This could also be said with the 3.5l/3.9l but they weren't as popular as the 3.4/3.8 and are being phased out after just 5 years.
This LFX 3.6l motor is said to be able to push 350hp with just a premium fuel tune all motor. That is without the twin turbo setup that is said to be in the works over at gm as a factory option reported in the 425hp range. You could also get a bolt on supercharger setup that includes everything down to the ecu and push 440hp on premium fuel and same mpg for $5700.
I also love the idea of a integrated exhaust manifold. Very nice for the absolute ease of turbocharging and motor swapping. Lower emissions, narrower engine size and noise reduction. 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 underhood work easier. Due to less surface area, the new design contributes to a 1 decibel reduction in engine noise at idle.(some of that from a article found on the internet60DegreeV6.com - 3.6L DI Heads w/Integrated Exhaust Manifolds
The new composite intake manifold from the factory also gets me excited. Composite intakes can be a lot stronger and resist heat a lot better than any metal. That is perfect for making the most of your forced induction, keeping the intake air cooler and keeping your intake intact under positive pressure.
Just take a look at the composite lax intake for the ls1/ls6 that fast just came out with. Even has a way to vent intake pressure should a backfire happen or you push too much boost.
LSX Composite Intake Manifold - Car Craft Magazine