The Cosworth V12 on the T.50’s Niki Lauda, which still swings to 12,100 rpm, comes with revised cylinder heads and camshafts, plus a higher compression ratio of 15: 1. GMA says weight-saving measures extend to intake, exhaust and control systems, as well as the engine itself. All valves are made of titanium, and there is no variable valve timing because this car is always in full attack mode.
A simpler induction system has 12 throttles on top of the engine, fed directly by the airy air box. The exhaust system does it without catalysts, has thinner Inconel walls, and with only limitations for track noise to achieve the benefits of smaller mufflers.
The result is a specific output of 1
Finally, GMA’s bespoke Xtrac IGS (Instantaneous Gearshift) is electronically operated, six-speed, paddle-shift gearbox 11 pounds lighter than the car’s manual gearbox.