Does anyone have any experience with a -2 inch shorty lower on a 25ZX or 27ZX with the non-stepped pad bottom? I would appreciate any input. I have a 25ZX that will be havinbg the engine refreshed and am thinking about a shortie lower with my B1 upper.

Did you do a search on donzi.net...there was a guy with a 25 running a shorty and extension box running 100+mph.

Yeah, Im well aware of that project. Unfortunatley I dont have time to read thru 500+ posts. Also, I am not talking about adding an extension box, just a shorty.

a shorty will wake up a non stepped hull...you boat will like a -2 or even a -3..measure first...

What Fixx said.. What HP ya runnin?

502 MAG mpi. That will be getting pulled out next fall and refreshed. Looking at having some cam and head work done to get up around 500hp. Nothing extreme by any means.

How much different is a 97 25zx hull v/s a 87 25 zx hull? A buddy has to put a new transom in his 87 25 zx and we are trying to figure out what would be the best distance to raise the bravo drive.

alot...87 dont have steps were a 97 does..on your friends boat leav the engine where its at and use a shorty drive to get the x dimension where you want it..i dont like raising engines in boats,if anything i would lower it for handling purposes..also you will have to really do some extensive glass work to the transom to raise the engine 3 or 4 inch's..that also costs alot more money then a shorty..

so what would a stock powered 25zx gain from a shorty...speed wise?

OP's 1997 25zx is a NON stepped hull