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25 AT drive question

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25 AT drive question

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Old 01-02-2019, 12:38 PM
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Default 25 AT drive question

Here is what I have done to myself. New motor is off dyno. Made great power and torque. Peak torque of 1072 ft# is at 4700RPM and 1008 HP at 5300RPM with small Procharger. I plan on detuning this thing down but am still going to be in the 800-900 torque and 750-800 HP range. Problem is I still have a Bravo 1 drive with 29 4 blade prop. I know that I will need to do some upgrades. I do most of my time on Lake Michigan. Prop centerline is about 5" from bottom. What is the best way to go? -2" Imco? B-Max? 1.36 gear? 4 blade 36? Upgrade trim tabs? I will spend the money but really don't want to. lol. Again boat is a 1998 25 AT with me wife and two kids. I guess give me an education. FYI I am a drag racer and just learning the boat life style. Thanks,Kyle
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Old 01-09-2019, 02:17 PM
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Join Date: Feb 2007
Location: Franconia, PA
My Boat: Smith Brothers/CRC 611. 2013/2016 OPA Class 6 World Champions, 2009/2015/2018 OPA Class 6 National Champions. 2015/2018 APBA National Champions, 26' Joker Powerboat.
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If you are going to do any rough water running look at DriveGuardian by Marine Design Corporation in place of stock coupler.
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