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Old 10-21-2011, 03:02 PM   #12 (permalink)
Capt J
Senior Member
Join Date: Jul 2005
Location: Fort Lauderdale
Posts: 5,977
With an 84' to push, you're really going to need de-rated 12 cylinders for the torque factor or large 6's. I forget the CAT model designation but I think they were 3506's that they normally used in purposes such as yours. Cummins also makes a big 6 that would be ideal for your purpose, I think it's a KTM 12 and they were normally around 600hp. Although it might be too much HP for your boat than you're looking for.
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