09-29-2020, 12:01 PM
You had asked about being underpowered, not performance numbers.
At 3200 rpms my cruise is 21 knots burning around .7 to .75 kmpg.
Cruise at 3000 is 18 knots and 3400 is 24 knots.
Fuel economy is best in the 3200 to 3400 range (75% of WOT). If 8.1s were available for my boat, I would have gotten them. But I wouldn't not by a boat with 7.4s if it was a good boat.
Good Luck!
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At 3200 rpms my cruise is 21 knots burning around .7 to .75 kmpg.
Cruise at 3000 is 18 knots and 3400 is 24 knots.
Fuel economy is best in the 3200 to 3400 range (75% of WOT). If 8.1s were available for my boat, I would have gotten them. But I wouldn't not by a boat with 7.4s if it was a good boat.
Good Luck!
Sent from my SM-A505U using Tapatalk

