In the high-stakes world of performance cars, horsepower is king. It's the first stat bragged about by owners trying to explain why their Camaro, Challenger or Mustang is better than their foes', and it's the headline figure promoted by the automakers themselves year after year.

When Ford announced that the 2013 Shelby GT500 would be punishing the pavement with 650 horses, the world stood up and took notice. Remember, though, these were just estimated figures, as the car had not yet been SAE certified. If reports from the Team Shelby message board prove accurate, the 2013 GT500 has finally gotten its official figures.

How's about 662 horsepower and 630 631 pound-feet of torque?

Yep, that'll do. It's notable that these figures represent increases of 12 horsepower and 30 21 lb-ft over the earlier estimates, and they also put even more distance between Ford's top-performing Mustang and Chevy's 580-horsepower Camaro ZL1. It also means the Shelby lays down considerably more ponies that the Corvette ZR1 and its 638 horsepower and 604 lb-ft.

Now, will we see a corresponding horsepower-addled response from Chrysler or General Motors? Only time will tell.

*UPDATE: We've received an official press release from Ford quoting power figures of 662 horsepower and 631 pound-feet of torque, making the 2013 Ford Shelby GT500's engine the most powerful production V8 in the world. Ford is also keen to point out that the 2013 GT500 is one mpg more fuel efficient, both city and highway, than the 2012 model and five mpg better than the Camaro ZL1. Scroll down for the complete press release.
Show full PR text
At 662 HP, 2013 Ford Shelby GT500 Certified As World's Most Powerful V8! Segment-Leading Fuel Efficiency

· The 5.8-liter supercharged V8 in the 2013 Ford Shelby GT500 is SAE certified at 662 horsepower and 631 lb.-ft. of torque
· The world's most powerful production V8 is backed up by chassis, aerodynamic and braking performance that makes the GT500 an outstanding all-around sports car
· Even with 112 horsepower more than the 2012 GT500, fuel economy is increased by 1 mpg both city and highway, 5 mpg better than Chevrolet Camaro ZL1


The all-new supercharged 5.8-liter powerplant in the 2013 Ford Shelby GT500 has been officially SAE-certified as the most powerful series production V8 in the world with peak output of 662 horsepower and 631 lb.-ft. of torque. That's more power and torque than low volume sports cars costing tens or hundreds of thousands of dollars more than the GT500, which is the most fuel-efficient vehicle in its segment. In fact the 2013 GT500 is the most fuel-efficient car with over 550 horsepower in any segment available in America.

Unlike high-strung engines found in much more expensive exotic supercars, the GT500 engine generates its massive thrust throughout its operating range with 395 lb.-ft. of torque available just off idle at 1,000 rpm. More than 90 percent of the peak torque is available from 2,200 to 5,800 rpm so that no matter when you squeeze the go pedal, the GT500 will just get up and run.

The combination of the new TVS 2.3-liter supercharger, twin overhead camshafts and four valves per cylinder ensures this stallion can breathe all the way to 7,000 rpm with the peak power production coming at 6,500 rpm and holding fairly steady right to the rev limit.

"Our goal is to create outstanding all-around performance cars, not just stoplight-to-stoplight sprinters," said Jamal Hameedi, SVT chief engineer. "We've backed up this amazing powerplant with a more refined chassis tuning that helps keep the rubber on the pavement without punishing the driver's spine and six-pot Brembo brakes that dissipate speed with ease stop after stop."

The broad, flat torque curve of the GT500 engine makes it tractable and easy to drive whether trolling along in traffic or powering out of a turn on a twisting country road. With more than enough grunt to push the coupe to 200 mph and beyond, the chassis has been tuned to absorb the road imperfections that can cause instability at high speeds. The revised front fascia and splitter help manage the flow of air around and under the GT500 so that it offers 33 percent more effective aero loading at 160 mph compared to the 2011 model and feels more firmly planted.

"The engineers at Ford SVT focused on the fundamentals first with solid mechanical grip and strong brakes," added Hameedi. "On top of that platform they added advanced driver-adjustable electronic assist features including launch control, Bilstein adjustable damping, AdvanceTrac stability control and electric power-assisted steering."

Even with the most powerful production V8 in the world, the 2013 Shelby GT500 improves on the fuel efficiency of the 2012 model with an EPA-estimated 15 mpg city, 24 mpg highway and 18 mpg combined with no gas guzzler tax. That's 5 mpg better on the highway than the 2012 Chevrolet Camaro ZL1 even with an extra 82 horsepower and 75 lb.-ft. being generated under the hood. With the 2013 GT500 world-class performance no longer has to mean a world-class thirst for fuel.

The 2013 Ford Shelby GT500 will be built at AutoAlliance International Plant in Flat Rock, Mich.


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  • 278 Comments
      Paul P.
      • 2 Years Ago
      A 640hp Viper, a 638hp Corvette, and a 662hp GT500, all from the factory. The fact that these things exist makes me happy to be alive.
        k_m94
        • 2 Years Ago
        @Paul P.
        It might only be for the 2013 model year. The Mustang will become all new in 2014/15, as would the Corvette, and we all know they release the base model and midlevel a few years before the insane powered ones. And even then, with the Mustang going to a (rumored) lighter+IRS setup, they might bring the power lower (or else have much higher prices), and it's rumored the C7 would get a smaller displacement LS block. But in 2013MY, we will have a last hurrah 662hp GT500 and 638hp ZR1, and a brand new Viper with estimated and probably quite underrated 640hp (like how they said the GT500 would have 600, then 650). That is a combined total of 1940 (!) hp and 1834 lbft from 3 cars that together would cost about $300,000. 26 cylinders, 20.4 liters of displacement, and enough roasted tire to make a smoke signal visible from the moon.
        EcoBooster
        • 2 Years Ago
        @Paul P.
        Great comment, sir!
      ToyotaSupraMan
      • 2 Years Ago
      To put things into prespective, that has more power than the McLaren F1 AND the Ferrari Enzo. A production Mustang has more HP than a McLaren F1. Holy ****.
        MMA78
        • 2 Years Ago
        @ToyotaSupraMan
        But is it faster?
          k_m94
          • 2 Years Ago
          @MMA78
          Ironically, probably only around corners. But blame 1990s vs 2010s tyre technology for that more than the actual chassis competency.
      The Cory Jihad
      • 2 Years Ago
      As I've always said before, we can argue numbers all day, but what matters at the end of the day are sales figures. My store is already sold out of the 2013 GT500 and Boss 302. The first 2013 GT we got sold in 2 days and I've got 2 V6's sitting(in Grabber Blue and Gotta Have It Green. They look like Easter eggs sitting next to each other) that have been here for 5 days and 2 days respectively and both have deals written on them. I'd say Ford is making the right decisions because these cars are selling without piles of cash on the hood, just on the merits of the car.
      454
      • 2 Years Ago
      Absolutely retarded and fantastic at the same time.
      Justin B.
      • 2 Years Ago
      Those are crazy numbers coming from any car, but a Mustang? Well done Ford! I love how they just keep improving this car year after year.
      themanwithsauce
      • 2 Years Ago
      .....I just felt a great disturbance in the car world. As if millions of tires cried out in terror were suddenly silenced by a mustang. Seriously though, being a tire engineer is a pretty thankless job these days with the big three apparently having nothing better to do than demand tires for eco-crazy daily drivers and supercharging/turbocharging everything. It was bad enough when the italians kept calling for wider tires and the japanese decided everything was better with turbos and AWD. Now we have over 650hp available in a 2+2 mustang with a/c, a warranty, and it only needs premium unleaded......I love this country :)
      NY EVO X MR GUY
      • 2 Years Ago
      All I can say is: Dealer Mark-up is going to be INSANE.
        oRenj9
        • 2 Years Ago
        @NY EVO X MR GUY
        Maybe not, I've seen quite a few GT500s sitting on the lots. In fact, my coworker managed to buy one for under MSRP last year. The GT500 seems to improve a lot every year, so there is really no incentive for dealers to try to squeeze too much from them, or people with just wait for the Model_Year+1.
        alexkoolur
        • 2 Years Ago
        @NY EVO X MR GUY
        only initially - the 2014 mustang is going to be a completely new car from the ground up, so as always, this will only be the "it" mustang for 6 months
        alexkoolur
        • 2 Years Ago
        @NY EVO X MR GUY
        only initially - the 2014 mustang is going to be a completely new car from the ground up, so as always, this will only be the "it" mustang for 6 months
      Mike
      • 2 Years Ago
      Now stretch this platform with IRS, add 2 doors and make a sleek badass Lincoln flagship car!! MKR concept anyone with the newer MKZ style grill?
        Dark Gnat
        • 2 Years Ago
        @Mike
        Too bad Mercury isn't around, because that would make a great Cougar Eliminator.
      USCGTO
      • 2 Years Ago
      Wonder how the resale of the 2012/2011 be affected by this major update. Seriously I'll be happy with 550HP too. ;)
        k_m94
        • 2 Years Ago
        @USCGTO
        Is it true this will still cost $55k and be under $60k with all performance pack options? That is incredible. But really 550hp from a 2011-12 is by far more than enough.
        ngiotta
        • 2 Years Ago
        @USCGTO
        I hear you there. I've been shopping them myself and have found the low-mileage 2007/2008 are the best value at around 29k. Sure, "only" 500hp, but for around 6 grand, you could install a Whipple upgrade and be at 750hp.
      AnalogJesse
      • 2 Years Ago
      I want to stick this drivetrain under a Shelby Cobra kit car so badly...
      IOMTT
      • 2 Years Ago
      Them's fighting words! Holy Crap...206 comments!
      Custom Bikes
      • 2 Years Ago
      Well done Ford, show them all who's the top dog !!! Not that it need it, but I bet that for two grand worth of bolt ons you can get over 700HP which is insane and great at the same time.
        NightFlight
        • 2 Years Ago
        @Custom Bikes
        It won't even need $2,000. Exhaust, pulley, and a tune and you'd be there for a little over $1,000.
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