Extension Boxes on a 31SS"
 

Anyone installed a pair on a 31? If so, what kind of power did the boat have and what were the results? Also, was it necessary to go with raised boxes or shortie lowers?

Thanks, Mark

You have a secret to tell us?

sshhhhhhh. I have a secret, but nothing to tell:cool-smiley-011:

I have the answer....... Two motors go boom......BOOM!

No one ever put extension boxes on a 31 sonic before? There has to be somebody that's tried it out...

I don't have extension boxes, but I have the exact same question! Curiously awaiting for some experienced answers!

i seem to remember a thread about shorties not working well..but there is a 31 with blackhawks.

Sonic built a least one with Mercs ITS with 525's the ran well from what I was told.

I think it was the added couple inches of X hight that some of the other boxes like the stellings that might not have worked. Must be the combo of hight and set back that i read about.

Ask Dyno what his set up was I think he hd a 31 with 575'S and set back boxes. I think he had it tuned to 101MPH.

I think you mean Dano. I don't think he ever cracked 100. 98 or 99, just enough to be really frustrating. Do a search for his posts, they should turn up.

Chris you may be right, that is why I worded the way I did. You are right I did not do a search. I think I remember him saying he did a prop switch and went 101.

Well after all the $$$ and work I'm happy to hear he cracked 100. Would've driven me nuts to be that close to the magic number!

Remember it's not that you cracked 100MPH. It's the quality of the ride, you know what I mean