We built a 454 small block for my buddies 55 chevy. so you can get the cubes you need from a nice aftermarket block and stroker set up and still have the room and lower weight.

Ran in the mid nines but that was on race gas N/A with a killer set of heads and a HUGE roller cam.

you could Turbocharge or pro charge a set of SBC with big cubes and have the best of both worlds pretty easily

the white 31' GA has 454's..believe the blue 30' is/was a small block boat..

Would there be much of an advantage from a performance standpoint? Clearly, you can pick up big block-based engines pretty cheaply since they've been the standard marine engine for a long time. I like the idea of small blocks from a usability standpoint, but it all comes down to dollars and cents in the end...

Yep.

The blue boat came with 280 Mercs & it ran 70 mph all day long @ 5,000 rpm with 23" cleavers.

Great thread. its cheaper to get Hp out of a BBC then SBC. i am doing it now and it gets pricey. Just, i like the balance of the SBCs the boat just flys right and true. Something about a SBC boat going by a BBC boat like it was tied to a buulkhead

Toasty, is 500hp from a sbc that hard?
If you needed 2x600hp+ in a 30ft boat... you gotta think $ ain't an issue. Fast, Cheap, Reliable... pick 2.

Twin 450-500s in a 28-30 should get you moving pretty darn well.

I was quoted a few yrs back from a respected builder in Miami area $12-13k for 475hp/475tq closed cooled fully dressed w/ stainless marine exhaust.

Well, James Gang on S&F has a 31' with triple outboards that does 96. I agree that an SBC boat would be much easier to work on and better balanced. It just seems that there are many more BBC take outs and the like. Does anyone have a sense of how much faster a SB Ocean Pacer would be than a BB Ocean Pacer assuming both engines put out the same HP?

Hmm, twin 475 hp small-blocks. I wonder how fast an OP set up with them would be?

Oh, and dare I ask what an OP will run with a pair of 330s (BBCs) and TRS drives? I'm thinking 60-65.

500 hp isnt that hard, with todays heads its more easier then previous years. An honest 500 can be made out of a SBC. But everyones dyno is different.

a 475 hp SBC depending on drive hight and set up i.e. props and all i would hope a Sutphen 30 would do mid 80s.
my numbers came out to 83.
It would be great to just throw $$ at it and make close to 600 with jesel valve train, belt drive, alum heads that flow great, and major ci to get the boat pounding, and reliable exh like stainless marine. I understand SM ex flows well and is more reliable then CMI although they do look sexy, i would rather be on the water all the time then fixing cracked welds of CMI (for 3-4 hp its not worth it)
If someone is building over 500 hp i would really like to hear about it.
best of luck,,,i will show my progress shortly. i am only 388 inches and hope to be making 500-515hp with the combinations i have. started with old blocks dart heads and eagle rotating assy. we will see

Chris

thats all our's ran stock was 65 to 67 on a good day.

I am suprised no one has switched over to an LS1 based engine program in one of these.

inexpensive 6.0 liter truck engines and the cylinder head technology is so much farther ahead of whats out ther for BBC or SBC its rediculous. I think they flow like 270 CFM out of the box, have great swirl tech and are a fast burn head. plus they are alreay set up for EFI.

So drop on a Accel Gen 7 DFi or a big stuff and mow you have total tunability at the touch of your laptop.

I agree that an LS1 setup would be pretty sweet. However, there have been a few pairs of 500+ hp engines in the classifieds in the $10-15k range. I would think it would still be cheaper to buy one of these pairs of engines and drop 'em in than to build a pair of traditional or LS1 small-blocks. I'd also hazard a guess that you'd be within 5 mph or so with the big blocks of what you'd get out of the small-blocks. I love interesting combinations, but it ain't my boat! :drink:

Ok, one last question. If you had the inclination to do the glass work (or a cheap hook-up for glass work), what kind of speed could you expect out of a big single? Didn't the 31' with the 850 in Mass. run 85? Does anyone have experience with this setup?

That would be interesting! I would add to the glass work maybe a pad and a 12-15 notch or larger set back of same length. I think it would be harder to get mph from a single with the traditional bottom. i saw a local (south jersey) rigger put a notch in a straight bottom formula and it looked amazing. havent heard to observed #s yet but the work is 1st rate.

Toasty, the 32badboy seems to run nice w/ a 'not too big' of a single. How would it run w/ a pair of 500sbc?

DBA... "there have been a few pairs of 500+ hp engines in the classifieds in the $10-15k range. I would think it would still be cheaper to buy one of these pairs of engines and drop 'em in than to build a pair of traditional or LS1 small-blocks."
True, but who is to say what the condition of these engines are. I've heard too many stories about buying used power.
If I were buying used engines(dyno time or whatnot), i'd figure bringing it to a shop (Bandit, JC, Zul, Mesa) to open up the top end... and add that to the cost.

Storm, that's a fair point. JC does have that nice 800 hp engine in the swap shop. That, an old Speedmaster and some glass work and maybe you'd be on to something! :eureka:

i am not sure how the 32 will run with 2 500hp SBCs i know its fast and stable with a single 680. and in the mid 90s with a single 850 injected. There is a boat sitting (new) i believe that has stringers set up for twin SBCs the boat should be light and like a rocketship.

Toasty is that the RED one at SR's shop or is it another boat?

i dont believe so the twin set up boat is located in NJ at the boat factory.

sr has a red 32 twin set up last summer it didn't have a gas tank in it yet, so it could be reworked for a single. boxer should have some speed # soon. ernie has been busy with noppers 26 pete did the paint over and stuff. I wanted the red hull unfinished but to much cake for me being a 07 hull. I wish I knew chris was selling the 05 other 32 sutphen last yr before I bought the konrad and Gellner motor ,I got that money tied in to that set up:eek: could of bought chris's boat complete. the black 33 minus power looks like a fun project for the future if its still around this fall.:evilb: twin 700s # 4 drives new paint or twin gellner 1100s.:evilb:

pics ?

RED 309 AT RICHIE`s SR SHOP
 

The Red Boat Is A Complete Hull And Deck Set Up With Stringers For A Twins. I Am Sure If A Customer Wanted To Install A Single, The Boat Could Be Rerigged. That Boat With A Pair Of Ls Engines/brovo Drives Should Be In The Low To Mid 80's With A Pair Of 400 Hp Engines. Balance Should Be Incredible. After A Season Of Running The Boat,bolt On A Pair Of Whipples And Hold On.

whipples you mean hair dryers!

LOl

Come on we need the young market looking at sutphens.

every young kid with a subaru, honda, etc wants a turbo and an intercooler. If they see boats built with them they will go toward the boats that have them.

They also have DADDY'S MONEY.

How bout a pair of GN turbocharged 6 poppers in that hull?

is this a sutphen hull? what year? where is it?

Brand new 31, just like Ernies/Boxer, at the factory in Cape Coral, FL. Its all red.

whats the price on hull only?

Call the factory or Jim Goodrich and they will be happy to quote u a price. I believe they are only quoting a rigged hull and deck just minus power and drives.

30 Red Sutphen W/ Gn Turbo Engines
 

Jeff, Why Don't We Install A Pair Of 800 Hp Honda 4cly Turbo Engines. We Could Fit The Trailer With A Set Of 22 Inch Tires W/ Foose Wheels. I Am Sure That We Could Attract The ' Drifting ' Crowd.
Good Luck With The New Boat. It Looks Great,

If The Red Boat Were To Be Sold This Month , I Believe It Would Be A 2011 Model. The Numbers Go On The Boat When It Is Sold.

Thats what we were told Ernie. Lets get yours running and take her for a spin!:D Call me and i'll lend you a hand! The new deck on the 31's are great!

Fountain 40
 

Dan
Peter's Boat Is Almost Done. We Are Running Out Of Time. We Have To Be On The Road By July 13. We Hope To Make Both Races In Mich. We Should Be Competitive With The Engine We Have. In The P-6 Class The Boat Must Accelerate From 40 To 70 In About 4.5 Sec. We Should Have The Engine To Do It. Wazzup ,in P-6 Has A Supercat Lite,dry Sump Motor / 750 Hp. Should Be Interesting. We Have To Fire The Engine And Do The Set-up Work.
Peter Is Assembling An Imco 1.35 Lower Unit For My 31. With This Lower Unit With A Labed 24 At 6000 Rpm The Boat Ran 92 Mph. Won't Be Able To Play With My Boat Until After The Race.

Thats a sweet Idea.LOL

except hondas at 800 HP only make about 36 Ft lbs of torque.::eek:


The foose 22 inch wheels would be great though you could go boating in the hood anytime you wanted with no problem.

I guess thats a set up for the guys on the hudson river.:lolhit:

Just wondering if you guys made it. Will the 26 be racing in MI?
Phil

Sutphil
 

Phil, We Had A Few Delays. Peter's Boat Is Being Lettered. We Are Not Going To Make Mi. Very Disappointed. We Should Make The Balance Of The Races.
How Are You Making Out With Your Project?

Great, thanks for your input. No chance to get back to it for a few months. Summer is too short.

that is bad azz!!

a red sutphen it was all me but the #s didn't work out my wife would of killed me :evilb: so 28 saber is where I am at and should be a great hull from what I heard. Ernie and Pete I am pulling for you guys hope you kick some azz out there and hope to be there next y in p5 or p4r. I hope to be in the water by mid aug to see what my boat will do easy though, so good luck TEAM NOPPER thanks for the help art.ps really wish I had a red sutphen 31:coolcowboy:

damn air time that sucks. That red sutphen is one hell of a boat.

I am sure your new one will get the job done for you but if it were me there would be no question between the two.


what was the DIFFERENCE in numbers on the two boats?

I dont know crap about sabers so I am partial to sutphens. plus the extra size would be nice

Bumping this great thread! How about a pair of these? http://www.crateenginedepot.com/ZZ38...72-P764C2.aspx

They seem pretty reasonably priced. Any chance you'd get to 80 with 'em? It looks like closed cooling kits aren't all that expensive, which would alleviate the aluminum head issue. Would you pick up any speed with a Bravo conversion? Of course, Arnesons or Kaamas would be pretty awesome, but they cost real money...
:drink:

I still say a pair of nice simple SBC's with good cranks rods and pistons with DFI and some hairdryers is the way to go!!


when your not in boost its a very economical low compression pump gas freindly engine.

When your on it and in boost your making CRAZY HP and torque still on pump gas with a conervative safe tune.
What could be better?


Turbos have some a long way in the last 10 years and the right DFI and Tune can make all the difference.

Theres also some crazy stuff being done with Blow thru carbs.

DRAW THRU is dead.

It sure would be nice to have the extra space in the engine compartment. Obviously, a Bravo conversion and a pair of small-blocks would allow you to move the rear seat back if you were so inclined, which would be nice in a boat with a tiny cockpit like the OP. I agree about the turbos. Maybe some day... :bigbird:

Now how you go about proppng for that change in Torque output in such a wide band I have NO IDEA/LOL