small block in a 27 ?!?!
 

What are your thoughts on this ? Mid to high 600's horsepower wise. Its basically a marinized NASCAR engine !

Have a 650hp wippled 502 in my 27 and it does great

Not as easy as it sounds and equal or more expensive than a big block per horsepower.

Its a question of manners.

If you are talking about an outdrive boat you need a decent idle quality or you'll beat up the clutch and gears just getting out of the marina.

The 600 HP through 3 inch open pipes at 6500 RPM is a different proposition that 600HP through wet marine exhaust.

just as important as the 600 HP is what the torque curve looks like. If it cant be stabilized on a dyno below 3000 RPM its not going to come on plane real easy either.

High 600's - yeah not without a blower or be prepared to drop monumental coin on a small block to do this that works in an outdrive boat.

This can be done- but it will be expensive to do it well and by the time you are done a mild big block would have been cheaper.

This is a path Ive personally taken so I know.


Uncle Dave

Look at the 24 pantera plum loco 700hp smallblock

Uhh... thats a big block...


Uncle Dave

Uncle Dave you got a gourgeos looking boat and that engine and compartment looks like you can eat off of it.

Thanks sir, very nice compliment.

I work hard at keeping my toys in good shape.

UD

Bern...staggered small blocks... ;)

That being said...as light as our boats are..and easy as they get on plane..i think propped well it would work. But it might be doing it the hard way

Has anyone built a big cube small block for marine use? Just kind of curious, back when I was into cars there were some guys building 427-454 cube small blocks with pretty serious tq and hp #'s. I know they were pretty pricey to build, but in a small boat would the weight savings be worth the cost?

In a twin engine application yes. We rigged a 32 CObra raceboat with staggard 500hp smallblocks back in the day...ran awesome and the balance was amazing. Same thing with a 28 pantera...i dont like them with twin BBCs...too ass heavy....one with twin SBCs would rock

Not so sure on the small block idea. I'd imagine its lighter than a big block. In these boats, specifically, you don't want to lighten up the back end. Light stepped small boats like these are very sensitive. If the krypto is padded, which some are, your only adding to the problem providing easier and significantly more stern lift. If there was room, which I dont believe there is, a staggered small block would be pretty cool. You might just have to eliminate the tabs!

A Yellow one???

http://www.youtube.com/watch?v=Yovy8v6JUhU

wow! Thats EXACTLY like it...but..the one we did is in MAryland stripped right now...waiting for me to scrounge up some cash :D
But wow that is almost the exact same boat..colors..everything!

My dream is to build a 3 man bolster 27 witrh staggard smallblocks

An LS7 would be great. JMKID's Skater has twin 700+hp LS7's. I think that one of them would run great in a 27'. They are about 400lbs lighter and still make great torque.

I cant imagine how much he spent on those things though.:drink:

Two of those...in a 27...half stagger...imco scxs...3 man bolster....oh baby :hitit:

You are talking a single small block right?

Or are you talking twins?


Uncle Dave

My mechanic has triple blown smallblocks in his 40 Activator. 434 CID and about 700 HP.

I believe it´s the same boat.. aka The Chief.. was it Tommy Hoffstetters first boat or something? I believe looking at his site a while ago the same boat (?) was there in his pics.

Would love to get my hands on a boat like that.... even a bare racehull.

I´m thinking along the same lines... a Arrow 830 ( almost 28 feet) like Mange has is a Magnum Sport derivate and I think twin staggers should fit ?? Short staggers or something even. I´d like full Stagger and a 3 person sitdown as I got 2 daughters and got rid of my ex :lolhit:


http://www.youtube.com/watch?v=FautJBPj0LY

When we rigged it (brand new) in Florida it was a guy named Dominicks boat. Very cool if it is the same boat! Id love one too!

project
 

We just had a discussion yesterday if there will fit 2 smallblocks in a 29 kryptonite whit a friend of min who is specialised in ls7 engines for the european gt3 and 4 race class ( cars ) just finished a ls2 for my 21 v hull whit 560 hp @6100 and 544 ft/lbs @4000 rpm .

we thinking to put in 2 ls engines in staggered in a 26-29 v hull like a kryptonite or pantera .