Need a shoe and adjustable ride plate for the porpoise. Then adjust the ride plate to tune out the porpoise. You want ear ringing, try over the transom headers. Cool boat.

Hello, I just got my project boat running and it is modeled after yours. I started with a Starcraft holiday 22 and rebuilt everything. I did a 4.8 LS with a standalone ECU and custom stainless exhaust. In an effort to get the sound under control I copied wake board boats and made a type of fresh air exhaust. This wouldn't be ideal for shallow water, but certainly makes the sound more manageable. I am running a Berkeley 12JC with a A cut impeller that is probably a bit more aggressive than the little engine can handle for the weight of my boat. I am also dealing with the pourposing issue over 30 mph and am looking for your experience on how to get this issue resolved. I am going to start with a place diverter and see if that takes it out. trim tabs are also on the table. My issue is also enhanced due to the 30inch deep swim platform welded to the back and the 90lbs of kicker motor I carry on it. Overall my boat is close to a copy of yours and thank you for posting videos to illustrate the build. It has been extremely helpful on mine!

Thanks for posting these videos, always good info. I was debating trim tabs on mine, I have to keep the place diverter pointed down so it doesn't porpoise, like you said, no biggie but I wanna be able to throw rooster. I'm swapping my spun aluminum block for an iron block so the extra weight may even make it worse. Who knows we'll see.

I only ever seen two of them I was going to buy a pump with a what I think was a bushwacker but i couldn't find anything on it and it had a weird bracket for the trim ? Seemed easier to buy a new one if I ever get the transom replaced