We've known for months now that Dodge would be dropping in a new 6.4-liter (392 cubic-inch) HEMI V-8 for the SRT8 range, but it just went official: the 2011 Dodge Challenger SRT8 392 will get 470 horsepower, 470 pound-feet of torque, and a special Inaugural Edition limited to just 1,492 cars.

The bump in power--up 45 from last year's 6.1-liter Challenger SRT8--will be welcome, but the bump in torque will be more noticeable, with another 90 pound-feet available from 2,900 rpm. All that grunt will make the Challenger SRT8 392 an even better tire-shredding machine, though suspension upgrades for 2011 will help it turn better, too.

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SRT-tuned shocks and springs, more negative camber at all four corners, and an upgraded heavy-duty pump for the fully hydraulic steering make for what Dodge is calling a "more nimble and playfully 'tossable'" Challenger. Lateral acceleration is now up to .93g, bearing out Dodge's claims of increased grip at the least.

2011 Dodge Challenger SRT8 392

2011 Dodge Challenger SRT8 392

The first of the 2011 Challenger SRT8 392s built will be the 1,492 Inaugural Edition models. These cars will get a choice of two exterior colors (Deep Water Blue or Bright White Clear Coat) with a range of stripe options. Twenty-inch SRT wheels are standard, with polished faces and satin black painted pockets.

Unique 392 HEMI badges on each side lay claim to the big mill under the hood, and an updated front chin spoiler improves aerodynamics and cleans up the look. Inside, the Inaugural Editions are available with Smooth Pearl White leather upholstery with dual blue stripe accents and blue stitching. Serialized plaques will mark the number of the car in the limited run.

The 2011 Challenger SRT8 392 will arrive at dealers by the end of the year.