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04-02-2006, 08:28 PM
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#1
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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7 litre small block V8?
Doing some searching, I have found a company selling a GM smallblock enine which they state is 428 cubic inches! ( 7 litres )This seems too big. I was under the impression a small block V8 GM could not go past 400 Cubic inches ( 6.5 litres )
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04-02-2006, 08:32 PM
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#2
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Registered User
Country: Job Centre
Location: In a box
Occupation: Chaos's gofer
Interests: Skiving
Boat make: Spectre 30
Engines: 2 x Promax 225
Cruising area: In the bath
Join Date: Mar 2004
Location: In a box
Posts: 5,201
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When we went to the Jet Boat demo's a couple of years ago there were boats running 500 cu in smallblocks!
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Chaos for Moderator.
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04-02-2006, 09:02 PM
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#3
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Registered User
Country: US
Location: Virginia
Interests: Quiet desperation
Boat name: A Little Noisy
Boat make: Excalibur 24
Engines: Express Racing 525
Cruising area: Mobjack Bay (where?)
Join Date: Mar 2004
Location: Virginia
Posts: 1,974
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400+ c.i small blocks are fairly common.
Have a look here.
http://chevyhiperformance.com/techar.../148_0306_406/
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I thought that having more patience was a result of my getting older. Turns out that I just don't give a sh*t.
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05-02-2006, 01:17 AM
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#4
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Registered User
Country: somerset
Location: weston super mare
Occupation: engineer
Interests: Boating
Boat name: fourplay
Boat make: cyclone 19
Engines: 150 etec ho
Cruising area: weston /painton/ bognor reigis
Join Date: Mar 2005
Location: weston super mare
Posts: 228
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gm block
the gm block is a buick v8 just sold to genral moters i.e (rover)with smaller inlets and outlets a small block v8 will put out more bhp becouse it has a shorter con rods i.e the name a small block. remmeber bhp isnt about speed bhp is about the amount of tourk of the engine i.e tack the the meruary xrs 2 very low bhp but look at what speeds it can do
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05-02-2006, 01:39 AM
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#5
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Re: gm block
Quote:
Originally posted by karl
the gm block is a buick v8 just sold to genral moters i.e (rover)with smaller inlets and outlets a small block v8 will put out more bhp becouse it has a shorter con rods i.e the name a small block. remmeber bhp isnt about speed bhp is about the amount of tourk of the engine i.e tack the the meruary xrs 2 very low bhp but look at what speeds it can do
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has anyone ever told you that you talk shit!
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05-02-2006, 01:48 AM
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#6
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Registered User
Country: somerset
Location: weston super mare
Occupation: engineer
Interests: Boating
Boat name: fourplay
Boat make: cyclone 19
Engines: 150 etec ho
Cruising area: weston /painton/ bognor reigis
Join Date: Mar 2005
Location: weston super mare
Posts: 228
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Re: Re: gm block
Quote:
Originally posted by Burty
B]has anyone ever told you that you talk shit! [/B]
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why do you know the differance from a large block v8 to a small block ?
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05-02-2006, 01:50 AM
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#7
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Yup, 1 is big and 1 is small plus GM aint Rover you nobba
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05-02-2006, 12:01 PM
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#8
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Registered User
Country: US
Location: Virginia
Interests: Quiet desperation
Boat name: A Little Noisy
Boat make: Excalibur 24
Engines: Express Racing 525
Cruising area: Mobjack Bay (where?)
Join Date: Mar 2004
Location: Virginia
Posts: 1,974
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The Buick engine that became the Rover 3.5 engine was the all aluminium 215 c.i. engine first produced in 1959 or thereabouts.
The generic 'small block' that is normally referred to is the cast iron Chevy engine introduced in 1955 that was originally 265 c.i (approx 4.3 ltr.)
Although a 'big block' can have less displacement than a 'small block', they are physically bigger, hence the name.
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I thought that having more patience was a result of my getting older. Turns out that I just don't give a sh*t.
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05-02-2006, 01:29 PM
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#9
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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Quote:
Originally posted by Tony Davis
When we went to the Jet Boat demo's a couple of years ago there were boats running 500 cu in smallblocks!
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Yes, but in the picture, the driver was Pussyfoot, so you cant really believe that figure can you?
... Thanks for the info and links.. Sheeesh - soo much to learn, and my 'base information' gets reset everytime I investigate something....
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05-02-2006, 03:13 PM
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#10
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Registered User
Join Date: Mar 2004
Posts: 6,891
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Anyway, to answer Marc's original question - I know of a least 1 company producing a 7.4l small block, 600hp, crate motor, with a warranty.
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05-02-2006, 03:51 PM
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#11
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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Quote:
Originally posted by Matt
Anyway, to answer Marc's original question - I know of a least 1 company producing a 7.4l small block, 600hp, crate motor, with a warranty.
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Where Matt? I am seriously 'loooking' at options at the minute...
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06-02-2006, 09:14 AM
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#13
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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Marc - Has it got to be a small block, how many horses are you looking for and is torque important? Is a supercharged engine important? There are loads of engine companies in the States that will sort you out with something - if you go to Miami go to the tent at the back of the convention centre and you find at least 6 of them!
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Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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06-02-2006, 12:08 PM
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#14
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Senior Member
Country: Finland
Boat name: Wildfire IV
Boat make: Sleekcraft 21 exec jr.
Engines: Chevy 454
Cruising area: Turku Archipelago/ Finnish Gulf
Join Date: Jan 2006
Posts: 245
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The New Corvette (aluminum) Smallblock is a 427 on the 2006 ZO6 and the Block can be bought from GM.
End of discussion..me myself has a 440 Donovan aluminum "SBC" with a Kinsler Stack fuel injection.
Hmmmm should I put it in a Smuggler 21 SS and enter Classic Offshore
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06-02-2006, 12:25 PM
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#15
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Registered User
Join Date: Mar 2004
Posts: 6,891
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That's your decision to make is it?
Quote:
Originally posted by MikeyFIN
End of discussion
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06-02-2006, 12:37 PM
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#16
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Registered User
Country: Job Centre
Location: In a box
Occupation: Chaos's gofer
Interests: Skiving
Boat make: Spectre 30
Engines: 2 x Promax 225
Cruising area: In the bath
Join Date: Mar 2004
Location: In a box
Posts: 5,201
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Quote:
Originally posted by MikeyFIN
Hmmmm should I put it in a Smuggler 21 SS and enter Classic Offshore
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Mate of mine had a Smuggler 28, quite a nice boat.
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Chaos for Moderator.
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06-02-2006, 12:40 PM
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#17
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The Doc
Join Date: Mar 2004
Posts: 8,291
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More Likely a mate of yours was a smuggler aged 28!
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06-02-2006, 01:50 PM
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#18
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Senior Member
Country: Finland
Boat name: Wildfire IV
Boat make: Sleekcraft 21 exec jr.
Engines: Chevy 454
Cruising area: Turku Archipelago/ Finnish Gulf
Join Date: Jan 2006
Posts: 245
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Quote:
Originally posted by Tony Davis
Mate of mine had a Smuggler 28, quite a nice boat.
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Was your friends Smuggler a Daycruiser or a racer?
Smuggler History in Pics
Heres a 21...28 degree Deep V and No 5 just to tick Don Aronow off (?)...now remember this was the size of the boat that beat Don Royally.
And back to the Question...the GENIII SBC 7.0L was first in the C5R Race Corvette.
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06-02-2006, 02:02 PM
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#19
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Senior Member
Country: Finland
Boat name: Wildfire IV
Boat make: Sleekcraft 21 exec jr.
Engines: Chevy 454
Cruising area: Turku Archipelago/ Finnish Gulf
Join Date: Jan 2006
Posts: 245
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Quote:
Originally posted by Matt
That's your decision to make is it?
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No but end of wandering about them 7l Smallblocks..
They´ve been used in sprint cars since early 70´s in the States...biggest already then has been a 472 c.i SBC.
Sorry didn´t mean to sound rude.
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06-02-2006, 02:58 PM
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#20
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Registered User
Country: uk
Location: house
Cruising area: uk
Join Date: Feb 2006
Location: house
Posts: 2
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Re: Re: gm block
Quote:
Originally posted by Burty
has anyone ever told you that you talk shit!
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burty the **** talking out of his arse or is it mouth vant seem to see any differance
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