Driven1, The 625's in my boat carry it to the high 80's and I now have labbed my 5 blades and expect another couple of mph. It should be around 90+. As for fuel economy, I can only say that they are impressive when compared to the 500's and 525's. They are extremely fuel efficient for 625 hp. And they do sound awesome at 6000rpm. I could not be happier.Originally Posted by DRIVEN1
As for bigger power, I am told by Ilmor that they have nothing in the near future coming out bigger than the 625. I am not sure what the near future means, but I would love to see something in the 700-750 hp range, but they told me that they want to be sure that anything coming out of Ilmor has to be tested over and over again for reliability.