Ok, would like some concensus on this one. I have a 1990 Bayliner Ciera 2665 Sunbridge (9' 6" beam wich later grew up to be the 2855 in 1991), 454 Bravo II with aprox 1000 hours<br />on the motor and 500 hours on the drive. Engine and drive runs great. However, there's a couple of 1986 Bayliner Contesas with new 350 chevy vortex motors with Volvo duo props that <br />can pull away from me. At 4000 rpm, I can hit around 31-32 kts, but I just don't feel comfortable running the engine that hard for any length of time. So I'm looking for a little more speed and have had it suggested that I could do so by switching to the Bravo III lower unit which will bolt right up. I understand that<br />will also improve my fuel burn as well as decrese the rpms I cruise at. <br /><br />So here are my questions:<br />1) Will the Bravo III lower unit bolt right up to my existing unit?<br />2) Will it improve the fuel burn, top speed and ultimately, lower my cruising rpms?<br />3) The 454 having aprox. 1000 hours on it, what is the max rpm one should cruise it at for a period of time?
