Motor Trend has got word that an SRT Viper ACR – the acronym for American Club Racing – is headed for a reveal in 2014. However, at the same time as SRT is working to maximize the model's performance, the report says there's an internally imposed performance ceiling on at least one aspect of the super coupe that will keep it from being all the Viper it could be.

Having watched other super sports cars go super fast on Michelin Pilot Sport Cup tires – MT cites the Chevrolet Corvette ZR1 as the prime example – SRT is looking to Pirelli for a set of rubber that improves on the Viper's P-Zero Corsas. Where the Viper ACR will be restrained is its power-to-weight ratio; rumor is that bosses at parent company Fiat have decreed that the Viper cannot outdo the 5.2-pounds-per-horsepower of the Ferrari F12 Berlinetta. It's also rumored that Ferrari doesn't want the Viper to have more power than the 731 horsepower of the F12, even though SRT has said it would be "relatively easy" to increase output from the current 640 hp.

The last Viper ACR didn't get more oomph under the hood, so there should be plenty of ways to navigate Ferrari sensitivities. However, the last Viper club racer did offer a Hardcore Package that dropped weight by 40 pounds. If the specific power-to-weight number really is a bright line for the coupe's development, it will be interesting to see if such a package is offered again and how SRT manages it.

UPDATE: SRT boss Ralph Gilles has poo-pooed these reports, saying that the whole thing stemmed from a "joke I made at the [New York Auto Show] Viper reveal ... that apparently took a life of its own," and tweeted that "Ferrari plays in a totally different market."


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  • 124 Comments
      domingorobusto
      • 1 Year Ago
      The Vipers primary competition isn't the F12, it's the ZR1. The current ZR1 has a power to weight of ~5.25 lb/hp RIGHT NOW, and the next one is bascially certain to best that by a significant margin. So they're really going to neuter the Vipers chances against against it's primary competition in the name of not competing with an only marginally internal product that it already doesn't compete with? Damn that's stupid (if it's truly the case).
      Neez
      • 1 Year Ago
      This is stupid, most people don't buy a ferrari because it's the highest performance vehicle they can afford for the money. It's the status and sex symbol that you're paying for.
      Donny Hoover
      • 1 Year Ago
      You have these cars, the Viper, the Corvette and the GT-R, the whole purpose of which was to wipe the floor with the likes of Ferrari, at a much lower cost. It is not a Boxster, made to fit nicely into a certain cost/performance segment between two other cars. It is a Chrysler halo car, second to none, or at least it was before they were bought out. To do this to the regular Viper is insulting. To do it to the ACR version is an travesty, and if they are planning on it, I'd sooner they just hadn't brought it back at all. Let it rest in peace instead.
      Pedro Gonsalez
      • 1 Year Ago
      Overreacting to a rumor from Motor Trend aren't we? I'll reserve my judgment for when we have the official numbers from SRT.
      express2day
      • 1 Year Ago
      I can see that they'd want to protect the "jewel" of the collection i.e. Ferrari but "Ferrari" is also more than just hp. Aftermarket tuners and others have been besting Ferrari hp in the past anyway.
      Mark Seagondollar
      • 1 Year Ago
      I don't see how Ferrari would be threatened by just HP numbers. This is like asking if the maker of a Samurai sword would complain about the Claymore (the Scottish sword, not the anti-personnel mine) length. Truly apples and oranges, but which is bigger? Doesn't matter.
      FRD
      • 1 Year Ago
      It would seem un-American to do what they suggest.
        snap_understeer_ftw
        • 1 Year Ago
        @FRD
        what? GM does it with their vehicles....The 556hp high-end Camaro doesn't outperform the Corvette ZR1
          Peter DePriest
          • 1 Year Ago
          @snap_understeer_ftw
          The Camaro also weighs 800 pounds more. Its really quite simple and not surprising that a Camaro cant outperform a Corvette that cost twice as much for a reason.
          flammablewater
          • 1 Year Ago
          @snap_understeer_ftw
          That's because making a Camaro outperform a ZR1 would be waste of time and money.
          Donny Hoover
          • 1 Year Ago
          @snap_understeer_ftw
          No showroom version of that pig of an automobile could outperform a top tier corvette, no matter what they did to it.
      Jazzor
      • 1 Year Ago
      Eh... the people who purchase Ferraris are really not interested in purchasing a SRT Viper...
        imag
        • 1 Year Ago
        @Jazzor
        True, but they like to believe that they are buying the fastest thing out there, and a Viper with bigger numbers makes Ferrari's penile enhancement device look a bit less impressive. Ferrari hates that.
          Zeus
          • 1 Year Ago
          @imag
          I'm sure Ferrari owners believe a lot of things that aren't true :)
          antacid
          • 1 Year Ago
          @imag
          ferrari hasnt cared about being the fastest since the f40
      Patrick
      • 1 Year Ago
      Worried the Viper would be making too much power??? Yeah, because no one on earth has ever applied a turbo system to the snake! Strange. And when was the last time you saw a Ferrari that had any aftermarket work done to the engine? Other than some show car that never sees pavement. That would be like spotting a rear white elk! If Carroll Shelby was still alive he would punch Ferrari in the nuts
      cdwrx
      • 1 Year Ago
      Sounds like Fiat is going to make Corvette very happy.
      threefortyduster
      • 1 Year Ago
      I doubt this would happen...complete different markets. If you want a Ferrari, you're buying a Ferrari or its like. If you want a Viper, you're probably going to get the Viper or a Vette. Just the way it is.
        SCOTTM
        • 1 Year Ago
        @threefortyduster
        Or GT-R Total ZR1 sales are very close to total GT-R sales. GT-R sales, since its inception, eclipse Z06 sales. So, this is a three horse race. Don't kid yourself.
      Rick C.
      • 1 Year Ago
      I perceive the Ferrari F12 as more of a luxury sports car and not a maximum senses in overload sports car. They don't, and looking at the buyers, won't compete with each other.
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