Power isn't the problem. I turn it to 6800 and it's still making 632hp at redline. Peak power is 666hp at 6200 and 641 ftlbs at 4700. I realize this LS9 graph is the minimum the engine will produce but I have it by a nice margin all over the place. There are stock chassis dyno pulls on youtube and they make 520- 530 hp to the tires and 518-525tq. I made 493/497 at the tires with my old engine and it only had 593/587 at the crank. The biggest difference is the LS9 gets good mileage and has a mild hydraulic cam. I have to build a solid roller motor to compete. Now, my engine doesn't have a large cam by solid and big block standards. It's got good drivability. I'm not trying to say my engine is superior to the LSX line, I'm simply saying I have plenty of power to compete with anyone. I could pull off 4 plug wires for these tiny autocrosses anyway. I don't come close to full throttle. In fact, I didn't use full throttle much in the speed stop challenge either. I couldn't find the traction.