57Mack Posted October 13, 2018 Share Posted October 13, 2018 (edited) How much horsepower can I get out of a 237 Maxidyne? I want to do a custom install on a boat- not for a customer. I want to use Mack, but want to have more horsepower then the normal Cummins QSC8.3 @600HP in the comparable size boat. I want to be different. Wht can I do? Will the engine handle it? Edited October 13, 2018 by 57Mack Quote Link to comment Share on other sites More sharing options...
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