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-   -   How fast will 27 run with 800hp (https://www.offshoreonly.com/forums/fountain/356193-how-fast-will-27-run-800hp.html)

articfriends 08-21-2018 12:02 PM
How fast will 27 run with 800hp
 
Built a whippled 540 for a customer, hes putting it in a 97 27 foot. Made 880 hp on dyno at 5900, probably make 800 in boat w marine exhaust. Hes going to start out w 1.50 xr and 30lh labbed merc and 30lh labbed hydromotive. What kind of speed should he see, at what point is this hull speedwise going to get stupid, bow hook barrel roll and be upside down or something to that effect? No extension box, factory prop cl on drive, not raised.Thanks, smitty

Mentalpause 08-21-2018 12:17 PM
Which 27 is it going in?

articfriends 08-21-2018 12:39 PM
97 single step 27

hogie roll 08-21-2018 07:04 PM
Let us know! I think I remember a thread saying they get hairy.

badluck 08-21-2018 08:23 PM
My guess would be around 90mph. There is a member that was running close to the century mark with a NA 800 on a straight bottom 27, obviously he had the boat dialed in.

SB 08-21-2018 10:45 PM
99.9% that is Valako's boat.

SC288 08-22-2018 12:22 PM
Originally Posted by SB (Post 4645108)
99.9% that is Valako's boat.
Yep, that's Jim's boat!

hogie roll 08-22-2018 09:35 PM
Originally Posted by SC288 (Post 4645193)
Yep, that's Jim's boat!
thats fast NA!

IGetWet 08-23-2018 07:44 AM
Interested. Have a friend who just bought a 27. Setup right I’d say 95 maybe more.

articfriends 08-23-2018 04:08 PM
Originally Posted by SB (Post 4645108)
99.9% that is Valako's boat.
Me and Jimmy V have had a few good races thru the years, my 272 Baja against his 27 fountain. We've swapped wins back and forth. I see him at hotboat hardy party every fall. Ours boats were dead even when I run mine on full kill, with my 92/93 octane pulley I could walk away from him easily having a bunch more hp/tq than him BUT if we raced long enough id be all done at 96 ish and he'd eventually reel me in (talking a 5+ minute flatout race), Smitty

ar300johnson 08-23-2018 11:43 PM
How fast with that motor in a 1997 29 Fever?

jtbooten 08-24-2018 07:48 AM
Originally Posted by ar300johnson (Post 4645470)
How fast with that motor in a 1997 29 Fever?
I’ve always heard a 29 is faster than a 27 with the same power. I know the owners(current and previous) of a 27 and a 29 on the same lake, both with 496s and both are 2002+ models. The 27 is defiantly faster. Maybe big horsepower is different because of handling or???

I had a 2000 27 650 hp and it was not comfortable (to me) with that much power.

articfriends 08-24-2018 08:43 AM
I built a 500 efi that wasnt dynoed for a 99 27 fountain (might be a 2000/2001) , probably 580 ish hp, boat runs 79 gps pretty easy in ideal conditions, IDK how a 99 hull compares to a 97 though, Smitty

hogie roll 01-11-2019 09:54 PM
Originally Posted by articfriends (Post 4645403)
Me and Jimmy V have had a few good races thru the years, my 272 Baja against his 27 fountain. We've swapped wins back and forth. I see him at hotboat hardy party every fall. Ours boats were dead even when I run mine on full kill, with my 92/93 octane pulley I could walk away from him easily having a bunch more hp/tq than him BUT if we raced long enough id be all done at 96 ish and he'd eventually reel me in (talking a 5+ minute flatout race), Smitty
Whats the heads cam intake on that setup?

tmmii 01-18-2019 09:58 PM
Originally Posted by articfriends (Post 4645521)
I built a 500 efi that wasnt dynoed for a 99 27 fountain (might be a 2000/2001) , probably 580 ish hp, boat runs 79 gps pretty easy in ideal conditions, IDK how a 99 hull compares to a 97 though, Smitty
What drive and what prop did this boat like?


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