Awasome What Is A Good Cruising Rpm References. Web generally, once the boat is fully on plane, the most efficient cruise is likely to come in the 3000 to 5000 rpm range, with steadily deteriorating efficiency after it. Web what's a good cruise rpm?

Cause the torque converter to slip,. It's a very reliable engine and. I know mpg will suck, im just worried about overall long term engine.