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Cosworth briefly crows that Aston Valkyrie's 6.5L V12 has record horsepower

It's only natural that Cosworth would want the world to know that it's building the world's most powerful naturally-aspirated engine for the Aston Martin Valkyrie and Valkyrie AMR Pro. The timing of when the world should know about it, that's at issue. Yesterday the English engine maker's official Twitter account posted a picture of the barely-there coupe and the line, "We're famous for breaking records and our latest engine, the Aston Martin Valkyrie 6.5-litre V12, will be the world's most powerful naturally aspirated road engine with 1,130bhp." Two tags accompanied the post, #Cosworth and #AstonMartinValkyrie. About 90 minutes later, the tweet disappeared. The likely issue is that Cosworth got ahead of Aston Martin's official confirmation of Valkyrie outputs, something we're more used to from patent offices and Chinese model makers. The question is what output is Cosworth really talking about, and which car. All of last year, however, various reports had the street-legal Valkyrie making 1,130 hp. A Road & Track report attributed "nearly 1,000 hp" coming from the NA V12, the remaining 130 from a kinetic energy recovery system working the front axle. Hence, we're not sure if Cosworth's talking about its own engine alone at 1,130 hp, or its engine with the KERS. But then there's this: At the launch of the Valkyrie AMR Pro during the Geneva Motor Show this year, Aston Martin said the track-only Valkyrie AMR Pro would enjoy "a combined power output of more than 1100 bhp — more than the Valkyrie road car and a figure than comfortably exceeds the magic 1:1 power-to-weight ratio." The truth's a mystery for now, which is just as Aston Martin would want it. If Cosworth's engine really does make 1,130 hp on its own, that would be monstrous, and it would mean the automaker's been playing a serious game of English understatement. Even if Cosworth included the hybrid help, however, an NA V12 with 1,000 ponies would take the crown. The only competition is the 6.5-liter V12 in the Ferrari 812 Superfast, and that's 211 horses adrift. The quad-digit figures expected from Mercedes-AMG Project One and McLaren Speedtail require turbochargers, as does the just-teased V8 going into the Shelby Tuatara. With the first of 150 Valkyrie road car deliveries scheduled for next year, we probably don't have that much longer to wait to find out. Related Video:

Aston Martin DBS Superleggera Volante caught out in the rain

We've had the pleasure of driving the Aston Martin DBS Superleggera, with its 5.2-liter twin-turbo V12 making an astonishing 715 horsepower and 664 pound-feet of torque. The only drawback was not getting full exposure to the alpine air as we sped down the Autobahn. We've seen spy shots, though, of a DBS Superleggera Volante that could provide that experience, but it was still wearing camouflage. Now, our spy shooters have caught the convertible in testing, giving us a good look at the car. It was rainy as the car prowled around near the Nurburgring, so the convertible top was kept closed. It still looks sleek as all heck, with sheets of water dripping from its tires and aerodynamic bits, fallen leaves trapped in the grille. The convertible top maintains the tight and low roofline of the coupe, but it significantly shrinks the rear window. But that visibility issue would be eliminated with the top dropped. Under the hood and the rest of the sheetmetal, we expect this to maintain all the mechanical goodness and sporty prowess of its fixed-top stablemate. We're not sure when the official debut of the grand touring convertible will take place. We're hoping we'll have the chance to test it out before the fall leaves and drenching rains arrive in 2019. Related Video:

Aston Martin DB5 from ‘GoldenEye’ will be auctioned

Think of an Aston Martin DB5 in a Bond film, and you're likely to think of "Goldfinger" — the film and the car are forever linked in cinema history. But it's not the only Bond film with a DB5 chase, as the producers were eager to establish Pierce Brosnan as a credible Sean Connery equivalent, and put him in a DB5 on a mountain road in 1995's "GoldenEye." There was no white Mustang to chase in "GoldenEye," as Brosnan's Bond played with a red, reportedly rented Ferrari F355 driven by Famke Janssen. A few years after the film's premiere, in 2001, the DB5 was sold for $200,000. That doesn't sound fantastical for a Bond car, but at the time it was the most expensive piece of Bond memorabilia ever sold. At the end of the decade, the actual "Goldfinger" DB5 sold for roughly $4 million, which is unlikely to be topped by the "GoldenEye" car this summer. The car is not a barn-find or a lost cinema classic, either, as it has been on display in several museums such as the National Motor Museum in Britain. Bonhams will be auctioning this DB5 on July 13 at the Goodwood Festival of Speed. The car's estimated at $1.6 million to $2.14 million, which is still half or less than half of what the "Goldfinger" car brought in. Still, it's a silver Aston Martin with actual cinema history, and it's believably one of the reasons why restored classic Astons still get resprayed in Silver Birch. Related Video: