Hi, hope everyones summer is going well. We haven't had much hot weather up here.
My boat is a 16' flatbottom. My pump is a Jacuzzi 12wj 'A' impeller. It has a loader grate. My motor is the GM Performance 350/290. Headers are O/T, dry. Top rpm is 4000. Top speed is 47MPH on gps. Motors still fresh, pump's nice and quiet. I have a Custom Speed Marine diverter.
My questions are; 1. Is there anything I can do to get more thrust? The motor still has another 1000 RPM to offer. I like the jump out of the hole it has, and the low rpm cruise (32mph @2600). I may add nitrous later, so am hesitant to cut the impeller. I am curious about opening up the nozzle on the pump. It's stock. I learned of that mod on this site, but not many run the small block.
2. This thing is LOUD. It's an o/t system, stainless, with stainless mufflers. Could I safely inject water into the muffler, for noise restraint? The mufflers are about 16" back from the centerline of the shorty headers.
Thanks for reading. Paul.