I have a 200 262 with a volvo penta 5.7 carb with s.s. duo pro. f 4. What is the red line rpm? what is the cruise rpm? Max mph.? Currently i do most cruising a 3400rpms which seems to be best on gas. 3800-4000 i do use more gas. My spedo goes in and out. so i think 3400 rpms/ 26mph? I cruise on the upper chesapeak bay.