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What is normal operating temperature?


My 1994 390 CPMY has twin 7.4 Merc Bluewater gas carbureted engines. Port has 1100 hours, Starboard has 40. Each has 160 degree thermostats. Under normal load, running at 3000 RPM's, 15 kts, both operate at 170 degrees. if I open I up to 3750, (NOT WOT)I will hit 180 -185. Both are pretty much the same temps, so they are even. What do you all operate at? Does this sound normal?

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