"28 brave need more mph !!!"

why?

are you looking for more troubles and time off the water?

Gps 72 mph pretty much all it had 4600/4700 rpm. My thoughts we're that a pair of super chargers would net about 200 hp per motor ,and hope that would give me 10 mph (would love 15 mph,but I know it's a heavy boat).
The answer may be a 17/18 foot hydro stream or allison with a big ass outboard,so I can scare myself every now and then!!!!

I'll be surprised if you can net 200 hp with your MPI's and chargers. Just to give you a glimpse -- I recently exchanged a set of 454's with 588's ( did 700 hp on dyno) and this thing is only at 83 mph, I was at 72 with the 525 sc's. I think there is more especially when 600 hp is getting 82 in other 28's -- as I said still playing with props ;-).
And I can tell you that I didn't do it for $10 k!

I CANNOT BELIEVE I JUST READ THAT ON OFFSHORE ONLY!!


If you want to delete,or edit that ,before any one else see's it ,I will understand.

I have a boston whaler also ,that is referd to as "plan B",so I am always on the water. And a couple kayaks if times are really tuff.
But the answer to your question is that ,I don't like to be passed,for one thing, and the pursuit of the extra couple mph has always kept things interesting.

I do appreciate your point of view.If things go wrong,I'm sure it will be one of the first things to cross my mind. Leaving well enough alone has not been my specialty over the years.
Any how thanks agian,but I could not resist the opportunity to poke fun

smaller props will give you a few mph. read my earlier post.

I will probably send the hydromotives to bblades to see if a few mph can be found.
I can see where a 3 blade would let me pull a few more rpm/mph.

I dont have any spares ,so I guess it's almost mandatory to try a set right!!
I would hate like hell to spend my last pennies on super chargers,and come out with 4 -5 mph !!!
More than likely will run the boat a couple years and try to turn it for some thing a little larger.
33- 36ft what ever goes fast.

If you put blowers on that block youll get a most one more season out of it. Bolting on blowers without going through the rest of the motor is short term gain followed by a long term headache.

For 10K heres what Id do-

A Real exhaust system- or higher end manifold based system
A set of AFR/Brodix heads combined w/A more aggressive cam
Holley 1000CFM EFI, or late gen single plane manifold with Demon carbs.

You may be able to find most of these parts used-

Do all these, pick your combos well, and youll be at about 550HP (just a bit more than what my 406 my small block makes )

Someone already mentioned BBLades I agree or Hering van spin you up a thinned out prop & a workover.

And where will your drive suffer? Do you have external steering or not- If not youll hammer 1/2-1" of play into the bravo 1 gimbal in about a season- go grab the skeg tonight and lift up--- if you can feel more than about 1/4 inch of play its already worn.

Definitely go for that extra MPH- its what performance boating is all about.

Uncle Dave

Laveycraft 2750
Laveycraft 20.8 Sebring
Fleetwod nitrous toy hauler
Yamaha raptor 700/Kawi KFX 450
Nissan Titan

It must take alot of HP to make a 28 Apache run!!!, my speedo read 82 before the motors went, and I only had around 450 HP, my speedo must have been off by alot, I cant belive the power it takes to make a Apache 28 run!!!

IMO, if you're looking for big speed, apache aint the way to go.
BUT if you're looking to spank any boat in big water, it is the way to go.
Also imo, 10k doesn't go a long way with twins.
If you gain 5-6 mph that'd be alot.
As they say, "speed, cheap, reliable, pick any 2".

I dig this line.
"The answer may be a 17/18 foot hydro stream or allison with a big ass outboard,so I can scare myself every now and then!!!!"