Current top fuel Rail Dragsters have now passed the 8000hp Yep that is 1000 Neddies per cylinder. I wonder if that Yankee is the one I briefly owned many moons ago?
8.2litres for a Top Fueler, and I read somewhere recently that 10,000HP is the current goal. ergo an incredible 1200HP/litre. Of course they last less than 2 minutes of running time before a rebuild, so you could hardly compare them to anything even remotely 'normal'.