388 with 750hp,What speed ??
 

If I add 250 hp per motor to my boat :D what speed increase should I expect?
15?
20?

I figure someone already has a 388 with some 750 hp motors w/ bravos already in it , I am trying to get a Idea what to expect.

I am not looking for guesses

Thanks :D

Rob

Re: 388 with 750hp,What speed ??
 

95-96mph :drink:

Re: 388 with 750hp,What speed ??
 

I have tired out 500efi with whipples and teague drives and i am seeing 95 consistantly. The motors are going to be rebuilt this winter. With 750's you should see 105+.

Re: 388 with 750hp,What speed ??
 

Do it strip!!! that blower wine is cool!!

Re: 388 with 750hp,What speed ??
 

Is it the old style Whipples???

105 I think may be pushing it ?it would be nice though :D

I think Lmarth has 800hp w/ speedmasters and does around 108mph???

Re: 388 with 750hp,What speed ??
 

I have never heard the Whipples run before .I was use to the wine though :D On my Old Scarab I built a little Blower motor for it , Now it had some wine :eek: 8% over

Re: 388 with 750hp,What speed ??
 

Rob- 104 with a hair under 800hp. Lou

Re: 388 with 750hp,What speed ??
 

That with which speedmasters? Whats your gear ratio and prop pitch?

.I figure they slow it down some but the reliability is there.

Re: 388 with 750hp,What speed ??
 

Don't forget there is a limitation of hp to that particular drive set up, certain drives are more effecient, you might be pushing the envelope on a bravo style drive vs a stern surface drive. Good luck, it's a great winter project, I'm allready looking forward to the next boating season. 98-101mph

Re: 388 with 750hp,What speed ??
 

Whats up Jeff :D I figure with the B-Max and my driving habits I should be OK ,but on the edge. On my old Scarab after learning how to build drives :D . The Imco lasted pretty good on it at 828hp

I figure the boat may be 500lbs heaver than most 388's with Bravos and the B-Max may hurt a little bit .But I think the old motors where a little down on power also. i wish I dynoes them just to see, but wasted money.

Jeff Dean and Karen's new web site is coming along , might be a good local site for all of us to get together.I guess our first trip next year will be the oss race in Bolixi