48' Sedan Bridge thoughts

quote:
Originally posted by Robyns Nest

The test engines they say are 640 hp are really 660 hp. CAT never made 640's.

Great research.

The top speed is suspect as well. My boat has 660's weigh's 5000# more and my top speed is 38mph. Cruise is 30mpg burning 44 gph. I can't imagine lugging the motor at 20 mph. Way too slow for these big 12 liter motors IMHO.

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+1
660hp

Should run more like 25 Knts at cruise
I have a dockmate with one & 660 cummins, says he cruises at 27knts
 
http://www.boattest.com/boats/boat_video.aspx?ID=40#Test-Result All there telling you the best milage I would run this at 2200 rpm
 
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