Aside from the new GT3 cars from Porsche and Ferrari, January’s Daytona 24 Hours IMSA series opener will see a revamped competitor from Lamborghini. The Lamborghini GT3 car is based on its Huracan road car, a two-seater sports coupe (or convertible) that has been in production since 2014.

The Huracan has a mid-mounted naturally aspirated, 5.2 litre 40-valve V10 with a 90 degree bank angle. Using shared and un-split crankpins it has uneven fire and its is direct injected. Its double overhead camshafts are chain driven and operate through roller finger followers. It has a 90 mm bore spacing and bore of 84.5 mm is combined with a stroke of 92.8 mm for a displacement of 5204.2 cc.

All-aluminium and using a dry sump this V10 has been developed in conjunction with Audi, which uses it in its R8 production car. In road trim it produces around 630 bhp at 8250 rpm. Whereas Huracan road cars are available with four wheel drive the GT3 car is rear wheel drive with mechanical locking differential. The gearbox is six speed sequential gearbox by Hör, pneumatically controlled, fed by a hydraulically controlled three disc racing clutch.

The Huracan GT3 car is now it is third iteration, having been introduced in 2015 with an ‘EVO’ version following in 2018. For the new EVO2 the engine is essentially unchanged; the main thrust of the upgrade was the car’s aero with increased downforce helping improve stability and reduce pitch sensitivity. At the same time modifications to the nose form enhance the performance of the nose-mounted engine coolant radiator.

New for the Huracan’s EVO2 engine is an individual electronically controlled - drive-by-wire - throttle body for each cylinder. Lamborghini notes that the intake system is attached by only four fixings, easing access. The engine is run by a Bosch Motorsport MS6.4 ems, which offers driver selectable traction control adjustable from the steering wheel though ten positions.