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.