“The engine sounds absolutely incredible,” said Ross Gunn, one of three former GT drivers stepping into ... has already caught the attention of IMSA officials, who docked the Valkyrie by ...

This year, IMSA aims to better equalize their Grand Touring (GT)-class ... and GTD Pro in IMSA. Before that, IMSA based their initial powertrain settings on manufacturer baseline engine data ...

While the GT’s output can’t match the 710bhp of the IMSA-GTO it’s inspired by, performance figures aren’t too far off – the racer managed a 3.1sec 0-62mph time and a 193mph top speed.

Aston Martin’s new Valkyrie is guaranteed to generate some noise in its IMSA WeatherTech SportsCar championship debut. That’s an easy assertion to make when a V12 naturally aspirated engine is ...