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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 Valkyrie AMR Pro | Screaming Viking from the Valhalla of speed

This summer, two years after Aston Martin debuted the 800-horsepower, track-only Vulcan, the English carmaker unveiled the harder, faster, more-aero-focused Vulcan AMR Pro. We still haven't seen the final version of the road-ready Valkyrie, but as of right now we know Aston Martin's 's how-fast-can-you-go roadworthy jewel will get a track-only Valkyrie AMR Pro flavor. Detailed specifics will need to wait, but we're told to expect lap times rivaling "recent Formula One cars." For perspective, insider trading on the Valkyrie road car suggests 1,130 horsepower and a 2,270-pound curb weight. A naturally aspirated, 6.5-liter V12 takes credit for most of those horses, the remainder coming from a Rimac-developed, F1-style kinetic energy recovery system. Yes, that Rimac. The Valkyrie AMR Pro will send owners to a g-force-induced Valhalla, having more power, less weight, and "significantly increased downforce." The designers used a lighter grade of carbon fiber, replaced the windscreen and side windows with polycarbonate, traded for a lighter, molded racing seat, threw out the infotainment system, installed carbon fiber wishbones on the new suspension uprights, and bolted on smaller, 18-inch wheels that will fit the same Michelin tires used on LMP1 cars. Beyond larger front and rear wings and new programming for the active aerodynamics, Adrian Newey's team tweaked every aero surface. Powering all that with a lustier, remapped 6.5-liter V12, Red Bull simulations show the Valkyrie AMR Pro capable of close to 250 miles per hour. Sustained cornering forces should hit 3.3g. Thanks to F1-style carbon brakes, deceleration force tops 3.5g. Here's more perspective: the Telegraph spoke to Red Bull F1 in 2010 about in-car g-forces, and wrote, "Breath control is crucial — you cannot breathe freely above 3g because to do so would expose you to the risk of passing out." Since those numbers hint at something like ground-based flying, Aston Martin has sensibly organized a ground-based flight school. Owners will get "an intensive and comprehensive driver development program" that takes advantage of the same facilities and simulator used by Aston Martin Red Bull Racing F1. Fitness training comes with it. If you haven't signed the paperwork for a Valkyrie AMR Pro, you're too late. Twenty-five examples — one more than the Vulcan AMR Pro — will be produced, with expected delivery in 2020, and all are sold. Related Video:

Aston Martin Vantage GTE race car revealed

Though Aston Martin had more than enough news in revealing the new V8 Vantage, it decided it needed to show one more thing: the Vantage GTE race car. Obviously the body work is based on the road car, but it's more aggressive. It has an even bigger version of the V8 Vantage's massive grille. The hood gets extra vents. The exhaust now exits out the front fenders. And, of course, it gets a huge wing and equally monster diffuser. The interior is quite a bit different, though, with the comfy seats and leather trim gone in favor of a roll cage and bare carbon fiber components. Under the skin, there are some similarities to the regular V8 Vantage. The main connection is the Vantage GTE's engine, which is a version of the same 4.0-liter twin-turbocharged AMG V8 found in the road car. It makes more power than the street version with at least 530 horsepower. Torque is roughly the same, though. Instead of an eight-speed automatic, the Vantage GTE uses a six-speed sequential manual transmission. Both cars use double-wishbone suspension front and rear, but the GTE gets adjustable anti-roll bars and Ohlins adjustable shocks. The brakes are also upgraded to six-piston front calipers and four-piston rear calipers from Alcon. It will start racing in the FIA World Endurance Championship in 2018. Related Video: