Here's mine (1988 Top Gun). No porpoise when trimmed correctly

I cant tell are you using boxes also what do you have for power & get for speed

I don't think you need boxes. Sixes are as far back as fives on boxes already. Sixes are also very heavy so I'd be worried about cog with that much weight back on boxes (and the boxes are not light).


Side note. My drives are also very heavy and the boat runs balanced. My thrust angles are a little different and the my setup favors a cog farther back on the boat.

Kris Vogt

I may be speaking out of my ass, but if you're going to have 60, 70, 80k in #6's hanging off the back why not consider the Arneson's?

Seems like they would be cheaper in the long run?!?!?

for them to work on your boat 100% perfect ....you either need to cut a notch in the transom or use boxes. The above 88 has a notch !!!!

You can buy the wet sump drives pretty reasonable, its the plug in transom assemblies that are hard to find.

That was BlondeCigChick, & the boat was called "Ruckus":





Here's "Runnin with the Devil":






I've got a few good pics of Primal Instinct too, but I'm still looking for them.

I haven't ever seen or heard of a Flat Deck having 6's that I know of. They didn't start making 6's until a few year after the Flat Deck had been replaced with the Top Gun if I remember right.

Quick Question what kind of horsepower and you planing produce at the prop?

No boxes, just the standard #6 setup that can be seen more easily on "Runnin With the Devil" above. I'm running big ci N/A's in the 750-800HP range per side and see mid 80's.

I dont no exactly what Im going to do for power but Im hoping to but some blower motors in the boat but Im still a long ways befor that