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Hemi. The mere mention of the word is enough to strike fear into the hearts of lesser powerplants... or at least images of a pair of scrubby-looking bottom-feeders that really love themselves some Ram Trucks. In any case, we're keenly interested in the latest Hemi engine from the Dodge Boys, in this case displacing a heady 392 (or so) 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? How about 452 horses at 6200 RPM and 443 lb-ft at 4400? Yep, that'll do nicely, and it means that Dodge may actually be underrating its potent performer just a tad. Oh, and for what it's worth, IL managed to record 370 horses and 343 lb-ft from its 2010 Chevrolet Camaro SS on the same exact dyno. Chevy's answer ought to be coming in the form of a Z28 with over 500 supercharged ponies... Stay tuned, the horsepower wars are clearly still in full swing.


2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392
  • 2011 Dodge Challenger SRT8 392

Photos copyright ©2010 Drew Phillips / AOL

[Source: Inside Line]


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    • 1 Second Ago
  • 67 Comments
      • 4 Years Ago
      Generally speaking I trust Insideline, generally speaking I only take dyno numbers at face value. In house dyno's are best left as tuning tools not as accurate verification of factory specs. There is just no real incentive these days for underrating the car like there was in the 60s and 70s. People are drawn more by engine specs, than they are turned off by marginally higher insurance rates. Especially when the pony car market is in the competition it is in right now.

      The article doesn't even mention what type of dyno this was on, superflow, dynojet, mustang dyno? They make a significant difference in the numbers you get based on how they measure.

      Again dynos are more a tuning tool, than a verification tool
      • 4 Years Ago
      It's likely that they have an incorrectly calibrated dynamometer, not that SAE-certified vehicles are "underrated".
        • 4 Years Ago
        Dyno numbers from a different day with a different set of conditions are not comparable.
        • 4 Years Ago
        It's comparable enough to conclude that this car is significantly underrated.
        • 4 Years Ago
        That is possible but it would still be underrated seeing that a 425hp Camaro SS put down 82 less hp on the same dyno. That means this challenger is at least making 500 crank hp.
        • 4 Years Ago
        Have to agree with JNEL on this one. Power at the wheels is most useful for how it changes with a given modification on a given day not for the actual real output of a engine. Also consider what if this car is a ringer? If we see repeated results on different days in different places and types of dynos then we can say its under rated from the factory.
      • 4 Years Ago
      wasn't the mustang 5.0 underrated too?
      • 4 Years Ago
      What was the power to weight ratio of the older cars compared to now?
      • 4 Years Ago
      NICE! Great looking car too. Now if they can only get it to be a bit lighter.
      • 4 Years Ago
      Wait, are they saying that Dodge is lying? I'm confused.
        • 4 Years Ago
        Dodge is notorious for underrating HP. Its so they can actually sell their cars without the buyer incurring massive insurance rates.

        My insurance for a V6 Chrysler 300 was just $222 a month. When I upgraded to an SRt8, my insurance jumped to $285.
        http://www.epinions.com/content_526500335236
        Carlos
        • 4 Years Ago
        They're saying the Chrysler rated their car's hp at the wheels. They've done this for every performance car that I can think of, Neon SRT4, SRT8s, and 10s
      • 4 Years Ago
      Maybe someday we'll get to see a 426 or 440!!! With that said, I love this car.
      • 4 Years Ago
      I welcome an escalation of the Pony Car Wars, and although I'm glad this exists, the styling looks liek it was enlarged a bit too much to fit on a LX platform. This thing is ridiculously tall and just huge on the road.The V6 models look especially odd with the narrower tires.
      • 4 Years Ago
      You're only going to see better and better ET's from those cars. The stock air box on the LX cars is very restrictive, and the mid pipes on the exhaust are too. Many 6.1L cars got major gains just by swapping those out and the gains will be even more substantial on the 392's I am sure.

      Plus, the 12.40 pass was one driver in a car with probably 20 un-broken-in miles on it. I wouldnt be surprised to see 11.90's from a few of them in the very near future.
      • 4 Years Ago
      Every MoPar fan knows that Chevy could NEVER match Dodge at the drags. Yea, Chevy makes a great race car, but only the HEMI is put in a class by itself (SS/AH)because nothing, and I mean NOTHING, can stay with a HEMI MoPar.
      Chevy straps on a supercharger on its Z28, Dodge straps on a supercharger on its HEMI--game over--again !
      • 4 Years Ago
      Man , what a beautiful muscle car . All that room in front & back with a huge trunk to boot . Plenty of headroom ,shoulder & hip room . Real comfort on long extended cruises . The best sounding engine & exhaust system stock from the factory . I'll take mine in blue , just like the one pictured with a nice big moon roof & camel interior . Send me the bill !
      • 4 Years Ago
      where have you guys ALL been? in Cali one of the 392 mules was dynoed at 449rwhp on piss 91 octane yet still managed to pull off 12.4s @ 110-111
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