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-   -   potential 390 project...need input from the community (https://www.offshoreonly.com/forums/sutphen/379944-potential-390-project-need-input-community.html)

wakebum2507 07-18-2023 11:11 AM

potential 390 project...need input from the community
 
came across the old Benjen 390 hull on trailer in south texas. boat is in good shape, on a nice trailer. need power and drives. originally a #6 boat, so that complicates things if i wanted to put some Merc power and bravos on it.

My question for you guys since i've got no experience with a Sutphen hull - how are they for a poker run setup type boat, and what speeds do we think are realistic out of a 390 with some beefed up 500's and bravos?
the cost of 6's makes it difficult for me to want to take on a project, but i know where to source motors and some bravo drives. would likely close in the cabin, and do a 4 seat PR type setup, similar to the 33 that was recently redone with LS power (big fan of that).

thoughts?

https://cimg9.ibsrv.net/gimg/www.off...f76461686f.jpg
https://cimg1.ibsrv.net/gimg/www.off...b280a00d06.jpg
https://cimg2.ibsrv.net/gimg/www.off...abd20a8c7d.jpg
https://cimg3.ibsrv.net/gimg/www.off...b187b5f690.jpg

F-2 Speedy 07-18-2023 11:34 AM

Cool project, is it glass or kevlar ,, year ? Ive never been on one but from what Ive heard and read their a pretty fast hull

wakebum2507 07-18-2023 12:01 PM


Originally Posted by F-2 Speedy (Post 4873655)
Cool project, is it glass or kevlar ,, year ? Ive never been on one but from what Ive heard and read their a pretty fast hull

its all glass. could be really neat, i'm just trying to learn more about them before I make a decision. Dustin has some power for it, BUT the conversion from 6's to bravos would be costly so trying to feel that out. dustin also has some bravos and boxes that could work, but transom would need to be redone.

F-2 Speedy 07-18-2023 12:07 PM

Plus moving the engines back and relocating / aligning everything............might upset the handling ? not sure

wakebum2507 07-18-2023 12:11 PM


Originally Posted by F-2 Speedy (Post 4873660)
Plus moving the engines back and relocating / aligning everything............might upset the handling ? not sure

yep. was thinking i could leave the engines where they'd be for the mounts, and use some custom driveshafts instead, but it would definitely change the weight bias.

adding 6's to the project kinda throws it out of the park.

F-2 Speedy 07-18-2023 12:19 PM

Yep, its a whole different game moving to a #6, props alone are 10x the price of bravo's.......I dont know what the going price is to plug and recut a transom

wakebum2507 07-18-2023 12:37 PM


Originally Posted by F-2 Speedy (Post 4873662)
Yep, its a whole different game moving to a #6, props alone are 10x the price of bravo's.......I dont know what the going price is to plug and recut a transom

i feel like that'll be cost prohibitive, but i'm looking around.

cheech 07-18-2023 12:55 PM

What do these weigh?
Sick Stinger just parted that out last year.
IMO, if you can't swing # 6's for it, roll on by.
After the trouble of all the transom work I'd guess you'll eat Bravos up with that, even XR's
Unless you lollygag around at 2000 RPM all the time.
So there's that headache.

wakebum2507 07-18-2023 01:06 PM


Originally Posted by cheech (Post 4873668)
What do these weigh?
Sick Stinger just parted that out last year.
IMO, if you can't swing # 6's for it, roll on by.
After the trouble of all the transom work I'd guess you'll eat Bravos up with that, even XR's
Unless you lollygag around at 2000 RPM all the time.
So there's that headache.

factory was 7600lbs. thoughts on NXT's? would save me redoing transom.

F-2 Speedy 07-18-2023 01:34 PM

The nxt's in the classifieds are almost as much as the #6's

jeff32 07-18-2023 02:00 PM

Similar boat poped up today
6's too
but never rigged !
might save aome $ depending on how much work is needed on the one you found


https://cimg0.ibsrv.net/gimg/www.off...b9006001bd.png

Hoodoo 2.0 07-18-2023 02:05 PM


Originally Posted by cheech (Post 4873668)
What do these weigh?
Sick Stinger just parted that out last year.
IMO, if you can't swing # 6's for it, roll on by.
After the trouble of all the transom work I'd guess you'll eat Bravos up with that, even XR's
Unless you lollygag around at 2000 RPM all the time.
So there's that headache.


^^^^ this
if you don’t want it I might be interested.
I would have picked it up from Sick but didn’t have time to make the trip north at the time.

cheech 07-18-2023 02:07 PM


Originally Posted by wakebum2507 (Post 4873670)
factory was 7600lbs. thoughts on NXT's? would save me redoing transom.

That's what Google told me also. Is that where you got it also?
I'm not buying that just yet.
Maybe that's with no power or drives.
Hopefully some knowledgeable Sutphen guys chime in.

The owner used to be on here.
Think it said 1000HP a side and he was at 107MPH.

cheech 07-18-2023 02:46 PM

Well what do ya know, that unrigged Facebroke ad had this photo of a brochure. Courtesy of that guy. :drink:
Claimed 8550 dry with 500's and Bravos.
I was guessing heavier than that.
Bravos regardless. Good luck.

https://cimg9.ibsrv.net/gimg/www.off...b8429a1200.jpg

wakebum2507 07-18-2023 05:13 PM

since this was orignally rigged with 6's, it would be heavier for sure.

Hoodoo 2.0 its all yours if you want it. not wanting to spend #6 money on a 'could run good, if i throw 80K at it'

F-2 Speedy 07-18-2023 05:20 PM

What are they asking for it ? does anything else come with it

wakebum2507 07-18-2023 05:27 PM


Originally Posted by F-2 Speedy (Post 4873703)
What are they asking for it ? does anything else come with it

its honestly too good of a deal to be true, IF the hull and stringers are all fine. he's asking 10800, WITH the trailer it sits on. partially rigged, just needing drives and power.

possibility for transom to be bad, BUT if youre going to pay to convert it to bravos that has to be done regardless. i figure depending on weight and power, with maybe 600hp per side and bravos it could be a low 80's boat, prob upper 70's tho if its 9000lbs.

I figure that trailer has to be worth 6K easy.

F-2 Speedy 07-18-2023 05:53 PM

30-35K drives
12-16K transom assemblies
35-40K engines
5-7K trannies
8-10K exhaust
10K misc

Buy Moses TG turn key, add gas and go.......lol

wakebum2507 07-18-2023 06:22 PM


Originally Posted by F-2 Speedy (Post 4873706)
30-35K drives
12-16K transom assemblies
35-40K engines
5-7K trannies
8-10K exhaust
10K misc

Buy Moses TG turn key, add gas and go.......lol

whos moses and whats he got? always liked a gun.

the build sounded way more fun before I had all the expenses in plaintext in front of me :poopoo:

F-2 Speedy 07-18-2023 06:29 PM

Not sure if its still for sale ?

https://www.offshoreonly.com/forums/...gun-price.html

wakebum2507 07-19-2023 09:15 AM


Originally Posted by F-2 Speedy (Post 4873712)

i actually do like that quite a bit, minus the "break out" on the side. a good candidate for a fresh dustin interior.

WhiteNoise 07-27-2023 02:23 PM

I have a video on our YouTube channel (NorthEast Powerboats) of BenJen's 39' firing up in Connecticut in 2014/15. The title of the video is 'Sutphen 39 Dominator Startup' - it's LOUD. (Can't post links yet as it's a new OSO account but worth watching)

larslindroth 07-30-2023 01:05 AM


steelborn 09-18-2023 06:40 AM

I know that boat, I was on it with Herb, Ben and Jimmy Knowles one summer, Herb was getting it around 110 mph I think so, that boat will run the best with #6, it’s a total beast with 1000hp a side, with bravos you will never achieve that.
I was in talk with Dave but USCG registration was teared up a bit but enough to give me a trouble with export,
im glad someone got it,
welcome to Sutphen family,
nothing runs line Sutphen.

SutphenSteph 11-25-2023 09:03 PM

My 390 is the one on the brochure with the lightening bolt, bravo XRs on boxes I run 92-93 with 780hp per side. If setup properly it will run fast w bravos and give decent reliability obv depending on how it’s driven/throttled.

JohanSweden 06-02-2024 09:38 AM

Do anyone know if this boat was sold?

offshoredrillin 06-18-2024 09:18 AM


Originally Posted by JohanSweden (Post 4899421)
Do anyone know if this boat was sold?

I just looked at the un-rigged one here in MD for a friend, its in real nice shape, never rigged, interior and cabin is great, deck needs re-clearing. but a great solid boat.

steelborn 06-18-2024 07:01 PM

Can’t you share contact if you’re fiend is not buying it?

offshoredrillin 06-18-2024 07:50 PM


Originally Posted by steelborn (Post 4900926)
Can’t you share contact if you’re fiend is not buying it?

its in the fb ad, or put in the persons name on the ad..i dont have the guys number.


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