Cosworth Accidentally Confirms The Aston Martin Valkyrie Will Have 1130 HP

Cosworth is pretty excited to be developing the 6.5-liter V12 engine that will reside in the Aston Martin Valkyrie and it appears their exuberance has got the best of them.

In a since-deleted tweet, which Road & Track managed to get a screenshot of, the company boasted “We’re famous for breaking records and our latest engine, the Aston Martin Valkyrie 6.5-liter V12, will be the world’s most powerful naturally aspirated road engine with 1130 bhp (842 kW / 1145 PS).”

That’s a massively impressive figure for a naturally aspirated engine, but it could be a bit deceiving. When Aston Martin unveiled the Valkyrie AMR Pro at the Geneva Motor Show earlier this year, they confirmed the car would have a hybrid powertrain that develops more than 1100 bhp (820 kW / 1115 PS). The automaker went on to say this figure is more than what will be available in the road-going Valkyrie and it will allow the model to have a better than 1:1 power-to-weight ratio.

This seems to suggest the engine won’t actually produce 1130 bhp (842 kW / 1145 PS) by itself. Instead, it appears the engine will work with the hybrid system to develop the aforementioned output. This idea matches up with a previous report which suggested the engine will only produce around 1,000 bhp (745 kW / 1013 PS), while the rest of the power will be provided by the car’s hybrid system.

That’s just a rumor at this point, but it’s still possible that the Valkyrie could have the most powerful naturally aspirated engine in a road-going model. That record is currently being held by the Ferrari 812 Superfast which has a 6.5-liter V12 that cranks out 789 bhp (588 kW / 800 PS). Assuming the earlier report is correct, the Valkyrie’s engine would have around 211 hp (157 kW / 213 PS) more.