[Crackofdawn]

I bought a 1995 3600 Open last year with the same engines. jclark003's input is dead on. 2850 rpms is what you should look for at wot. I cruise at 2250-2300. At this RPM I am cruising at 23-25 knots depending on current. These engines will smoke at start up and if it is cold out (below 40 degrees), they will run you off the dock. I have block heaters that keep the engines between 90 to 110 degrees and is great for winter storage in the water. Also running the block heaters greatly reduces the smoke at start up to a very acceptable amount for you and your neighbors. If you research these engines at this hp they have a bad reputation. Most if the problems seem to relate to a low tolerant to overheating, poor maintenance and running them at top rpms or overloaded. I have been real happy with the boat and engines so far. The engines should start up immediately, if mine turn over a full revolution, something is wrong.

Good Luck