388 with 750hp,What speed ??
12-01-2004, 11:09 PM
#1
VIP Member
388 with 750hp,What speed ??
If I add 250 hp per motor to my boat 
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
Rob
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
Rob
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12-02-2004, 07:59 AM
#2
Registered
Re: 388 with 750hp,What speed ??
95-96mph 
12-02-2004, 01:53 PM
#3
Registered
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+.
12-03-2004, 12:13 AM
#5
Re: 388 with 750hp,What speed ??
Originally Posted by fountain40icbm
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+.
105 I think may be pushing it ?it would be nice though
I think Lmarth has 800hp w/ speedmasters and does around 108mph???
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Last edited by Strip Poker 388; 12-03-2004 at 12:25 AM.
12-03-2004, 12:22 AM
#6
Re: 388 with 750hp,What speed ??
Originally Posted by customryder
Do it strip!!! that blower wine is cool!!
On my Old Scarab I built a little Blower motor for it , Now it had some wine 
8% over
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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Gold Member
12-03-2004, 02:22 AM
#8
Re: 388 with 750hp,What speed ??
Originally Posted by Lmarth
Rob- 104 with a hair under 800hp. Lou
.I figure they slow it down some but the reliability is there.
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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12-03-2004, 07:27 AM
#9
Platinum Member
Platinum Member
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
12-03-2004, 08:07 AM
#10
Re: 388 with 750hp,What speed ??
Originally Posted by JASSMAN
Don't forget there is a limitation of hp to that particular drive set up, certain drives are more efficient, 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 already looking forward to the next boating season. 98-101mph
Whats up Jeff
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 . The Imco lasted pretty good on it at 828hpI 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
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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