The latest Hemi engine from Dodge, in this case displaces 392 cubic inches and placed gently inside the engine bay of the 2011 Challenger SRT8. Not only is this new Hemi larger than the already oversized version it replaces, it’s also considerably more potent. The Pentastar says that its new 392 kicks out 470 horsepower and 470 pound-feet of torque – substantial improvements over the outgoing SRT8’s 425 hp/420 lb-ft. But those are factory ratings, and we all know those don’t necessarily match what’s actually under the hood of production models.
Thankfully, the crew over at Inside Line managed to score enough time with a 2011 Challenger SRT8 to strap it down to a proper dyno. And the results? About 452 horses at 6200 RPM and 443 lb-ft at 4400 which means that Dodge may actually be underrating its potent performer just a tad. –ab
