I'm curious how much an improvement just the new engine will be if they retain the same transmission. Noticeable, I'm sure, but looking at the rear-wheel dyno numbers for the JK, the drivetrain soaks up a ton of power. I've seen an average of 130-140 at the tires, that a loss of 70hp, or just over 30%. Chrylser's own engine dyno numbers were actually 205 crank horsepower from the chart I saw. 30% is ridiculous.
All I can add is about the transmission is none of the other vehicles with the Pentastar are mated to a 4 speed auto. they all 5 speed or higher. supposedly the current manual will still be in the 2012 with the Pentastar.
Fields Chrysler Jeep Dodge Ram │ 2800 Patriot Blvd│ Glenview, IL 60026
Jeep now plans to revive one of its most hallowed nameplates, the Grand Wagoneer, for a new upscale SUV with seven-seat capacity. That was the promise made by Fiat-Chrysler CEO Sergio Marchionne who announced at a press conference at the 2011 Detroit Auto Show this week that a new Grand Wagoneer will arrive by January of 2013.
It will share a platform with the recently launched Grand Cherokee and the Dodge Durango. Interestingly, 2013 will also see the launch of a Maserati SUV based on the same platform.