I just want to get some input on how i can get my formula 1989 272 s1 to get up into the 90s i have 2 factory 500hp with bravo drives iam putting new gimbles and external steering this spring let me know how this can be done if possible with this hull thanks

I assume your running high 70's and if propped right low 80's on a good day. 10 more mph is going to take 150/200hp per side additional which will start killing drives. If I recall correct, that hull has a hook which could make the HP needed even more.
I had a 382 running 98 and have a suggestion. If you want a 90mph boat, go buy a boat that already goes that fast. It will be cheaper in the long run!!!

I might try to sell this boat what do u think that my 272 is worth in great condition with 500hp motors and clean trailer I mean clean for a boat never been in salt water?

there was a guy here touching 98 with a 272 a while back search threw the formula forum, as far as yours if you get someone to appreciate the motors and the rest is clean you might get around 20-22k if you get the right buyer, but 272's that sell lately are in the 14-19k range anything higher seems to sit and anything lower is usually gobbled up quick as lil red's was

Gary,

How many hours on your hp500 motors?

my buddy had 272 hp500s with bigger cams...you wont see 90..the hull wont do it

http://www.offshoreonly.com/forums/f...st-272sr1.html

250 hrs but looking for new parts now to make em 700 hp