Detroit 671ti's proper propping?

What do they consume at WOT or max HP? What is your hi idle (max rpm no load) and max loaded rpm?

Ships total fuel use at 15 kts; 23 GPH; 230 HP total; 115 HP per engine. Just over 1.5 gallon per mile.
What RPM is that, 16-1800?

In my years of purchasing old twin engine inboards, I've always got stuck with the old props that were rebuild so many times, the diameter was way gone. One boat, the previous owner even reduced his pitch because of the stuff he had on board (junk), removed it and the boat was under pitched.
At 1900 to 2000 you should be making some HP and burning near 23 GPH per engine, also boat speed should be up also.
You have the 380 hp beast?

Now I'm coming down there to beat you with some old & stale noodles.
If you didn't want to stress them, keep the throttles back. Now you have a non factory config vs your serial number.
So, Back to it after your lashings; That's 410HP at the flywheel, 380 at the prop. You lost 70HP off the top. I'm familiar with the tune as long as the timing height is correct. But you may still be under propped. What diameter wheels do you have? Pitch? Reduction?

Pretty tall on the stb but o k for now.
Next go for a WOT run, We want to see no more than 2450 mid loaded boat.
2400 fully loaded.

Don't forget the bait. As long as your off da dock!!!!!