• Jun 15, 2008
Click above to enlarge this shot and see the dyno graph

Whenever a new performance vehicle makes it into the hands of eager customers, a run to the dyno never seems to be far behind. This has again proven to be the case with the new Dodge Challenger, as a company known as Speedfactory has just done the deed on its new steed. What sets this particular vehicle and its dyno numbers apart from other SRT8s, though, is its Vortech supercharger. Considering that the 6.1 liter HEMI V8 under the Challenger's long, scooped hood is the same one available these last few years in other SRT-branded eight-cylinder vehicles, we're not too surprised to see that the system is pretty mature and posts rather good horsepower and torque numbers right out of the gate.

Coming in at about 495 horses at the rear tires, Speedfactory surmises that its Challenger is making around six hundred ponies at the crank. If owners of the GT500 weren't concerned with the Challenger's performance numbers before, perhaps the addition of a supercharger to the HEMI will bring it more in line with the numbers coming from the Shelby's force-fed mill. Folks, it's muscle car time again, let the games begin!


[Source: LX Forums]


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  • 49 Comments
      • 6 Years Ago
      lol cute. Can't wait for the Camaro.
      • 6 Years Ago
      Pure American horshi*. Dedicated to the reddest of rednecks who only have a mentality of Bigger=better.

      I'm sorry I had to do this but I'm tired of ignorant muscle head simpletons nonsensically trashing any European car because they have their muscle car fanboy bras and panties on. It's a nice looking car but please leave this out of the equation when your comparing luxurious performance cars.
        • 6 Years Ago
        I didn't trash any euro-performance cars, BUT I believe (having driven the LX platform for several years - as well as several euro-performance sedans and coupes) that the LX/LY platform cars from Chrysler LLC have earned the right to be compared to BMWs, Mercedes, and the other "less exotic" (over $100K US) European offerings.

        The underpinnings / suspension and transmission of the LX cars (300, Charger, Challenger and soon-to-be-extinct Magnum) are direct descendants of Mercedes engineering. And in all honesty, the cars are actually MORE reliable than their euro-cousins/competitors at a MUCH lower price.

        To broadly cast them aside in a comparison simply due to the fact that they're American/Canadian made is a gross underestimation of how they perform, and can only be made by someone who's never driven one.

        If ignorance is bliss, .........
      • 6 Years Ago
      Fantastic !!! Fuel price today ??
      • 6 Years Ago
      I see alot of you guys complaining about weight, but you just have to realize that technology has changed drastically in the last 15 years.
      I own a foxbody mustang, which weighs in the area of 3250 lbs. BUT, that low weight has a price. The interior is mediocre at best, it's loud, rides rough, there is only one airbag (anything before 1990 has no air bags), no traction control, no antilock brakes, the subframe setup is light but far too flexible from the factory.
      I like it as a muscle car, not an everyday driver. These new cars must be safe and maintain ride quality to please the average person.

      Lightweight materials cost more money, and everyone already complains about prices.
      So for the new challenger, mustang, and camaro to be much lighter (especially for seating 4) the price would be through the roof.
      Ya, they are all pigs, but you aren't going to get z06 weights at 30-40k, so just deal with it and accept this is what a normal 4 seater sports car weighs now.

      In performance per dollar the shelby will always have the edge on the srt8. Ya it's a couple bucks more from the get go, but intercooled SC kits cost about 10k with install and tune, where's if the shelby factory SC setup just requires a pulley and tune.
      It's tough to beat a Factory Aspirated car when it comes to the bang for your buck. People should of realized that with the srt4 neon, a $22k POS that has embarassed many higher ticket cars, just because of a little extra boost.
        • 6 Years Ago
        Sorry, but there are more modest sized sport coupes out there that don't weigh 4000lbs.

        Nothing says that the new Mustang has to be THAT much bigger than your fox body, which I had one too, and I daily drove it for several years.

        Technology, engineering and materials science has come a long way in 20 years. Granted airbags and things are add-ons, but they should be able to be off-set, while structures get stronger without getting bigger or appreciably heavier, and interiors can get better.

        Not a real excuse. These cars are heavy by lazy design, and making due with heavy platforms, in the Chevy and Dodge cases, and just idiocy in the Ford's case.

        The 2003-2004 Mustang GT concept that preceded the 05 GT production could have had two seats added, gone with the 3-valve engine that they used anyway, and a modern 6-cylinder that they are now just looking at doing for NEXT year... and they would have had a nice mustang. They botched it from what it could have been.

        And that is still granting them their retro styling, rather than pushing for a modern-styling alternative, which belongs under a mercury badge.

        What the Big 3 can do, and should do, versus what they ARE doing are drastically different.
        • 6 Years Ago
        Mk,

        You ramble on and on about the Corvette's lack of balance, even though balance is one of its best traits.

        Can you name another sportscar within the same price range of the Z06, that's both lighter and have better balance? M3, GTR, 997 Turbo are all significantly heavier. The 4L M3 engine weigths the same as the 7L LS7, and makes 80 less hp. (210hp less than a LPH kit LS7).

        The only car that's both lighter and have better balance is the Carrera GT. However, I don't think we need to mention the sticker price.
      • 6 Years Ago
      Some of you guys must be really high, I have a 4-door Charger SRT-8 supercharged Sedan that I have ran away from the GT500 & the 2005 FORD GT, which is supposed to be fast. We are talking about a car that is $135k+ (FORD GT) compared to a $38k (Charger) 4-door sedan. Some of you guys might think that the Challenger is slow, let me enlighten you, its going to have the same 6.1 HEMI, which is kicking the S*** out of FORD, why do you think that FORD has stopped their SVT line? Cant keep up. Don’t tell me GAS, unless you FORD boys just can’t afford the Gas. Just get off it and admit, Chrysler & GM is not only faster, but better all the way around. The CHALLENGER will rule the roads, with their SRT line. Funny, Fords come with the superchargers & Challengers & Chargers are normally aspirated. As far as weight, I like the weight, feels good at 180MPH+........
      • 6 Years Ago
      want
      • 6 Years Ago
      Price of gas does not affect these cars. The people who buy them have the money. Most people who buy SUV's have the money to run them. Most vehicles that are performance oriented are purchased by the wealthy.
      • 6 Years Ago
      I'm not what I would call wealthy but I've always owned cars like the Challenger and always will.

      I spend too much money on and too much time in cars to be bored to tears with them. The rush and the experience is worth the money to me and to enthusiasts who buy cars like these.

      A few outlets have already run SRT8 vs GT500 comparos and the SRT8 isn't that much slower for the difference in power. HEMIs with blowers have also made more power than this as well.

      Whenever you run into a muscle car you never really know how fast they are no matter what it is. Hot rodding will always level the playing field, run what you brung.
        • 6 Years Ago
        i think its more than a car and a half i would think its more.
      • 6 Years Ago
      It may have the power, but it's also packing 200 pounds more than the GT500, which is already itself a fat-assed cow of a car.
        • 6 Years Ago
        All he is doing is comparing the weights. If those cars were so AWESOME, then those companies would have figured out a way to cut off a couple pounds.

        As far as tech and refinement go, there is definitely NO comparison.

        As a side note, I am sure with some tweaking, Ford's blown 5.4L can put out more than 600hp...oh wait.
      • 6 Years Ago
      Nice.
        • 6 Years Ago
        nice, but those elbows seem unwieldy
      • 6 Years Ago
      The Challenger concept had no B-pillar. It was a true hard top.
      Unfortunately the safety requirements on new cars forces auto makers to beef up the body for rollover and side-impact protection. That's why ALL new American cars are what you call "pigs".

      That said, I'd love to have a Challenger at the Mustang's weight. But the Challenger has room for 4 comfortably, where the Mustang is more of a 2 + 2. Who knows what the Camaro will hold - besides a pack of cigarettes - in the back seat(s). Looking at it, it's a massaged Vette with a couple of high-chairs thrown in the back of the cabin for the sake of calling it a coupe. No matter.....by the time it hits the dance floor, the music will be done playing (with gas at $6.50/gallon by next June.
      • 6 Years Ago
      18% loss of power to the rear wheel??? seems like a lot.. seems like some poor engineering on someone's part. Average is 12%.. most high end FR cars are 10 or less.
        • 6 Years Ago
        Its a MB 5 speed automatic.

        Hopefully they dyno'ed in 4th gear (1:1)
        The power could be as conservative as 550hp.
        • 6 Years Ago
        18% is about average for a five speed auto. Automatics have a lot more drivetrain loss than manual cars.
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