[JLGarcia]

Originally Posted by chernaudi

Granted, all we have is the Oreca press release and the HPD and Penske formal announcement is probably still maybe a few hours away, but I'm surprised that nothing in the way of specs has been revealed as of yet.

HPD release.

Based on the very successful ORECA 07 chassis, the new ARX-05 prototype features Acura-specific bodywork and utilizes the race-proven, production-based Acura AR35TT twin-turbocharged 3.5-liter V6 engine.
[...]
Based on the “J35” family of engines found in Acura RDX, MDX, RLX and TLX production vehicles, the Acura AR35TT engine to be used in the ARX-05 was initially adapted for racing in a joint effort between HPD and Honda R&D Americas. Used in a variety of prototype chassis, the engine has powered class winners at the 12 Hours of Sebring (2011-13); the 24 Hours of Le Mans and LMP2 World Endurance Championship (2012); the American Le Mans Series LMP2 titles (2012-13); and the overall winners at the Rolex 24, 12 Hours of Sebring and Petit Le Mans in 2016.