I would imagine its going to cavitate very bad. Try asking the question here
under rigging and setup. These people race boats and are very knowledgeable.
http://forums.screamandfly.com/index.php?s=

--
Bill
Chesapeake, Va


"snownut 670" wrote in message
om...
Hi,

I have aquired a used SS High Five prop from a friend who can no
longer use it. I would like to mount it on my 1992 Evinrude 150EX.
The problem I have is the bullet inner diameter is 3-1/2" while the
i.d. of the origional prop is 4". If I use this prop will I run into
any problems with the smaller exhaust diameter? Will the exhasut
pressure coming around the outside of the prop cavitate it? Any
suggestions would be apprecitated.

Thanks,

Jason