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Old 04-02-2006, 09:28 PM   #1
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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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Old 04-02-2006, 09:32 PM   #2
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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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Old 04-02-2006, 10:02 PM   #3
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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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Old 05-02-2006, 02:17 AM   #4
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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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Old 05-02-2006, 02:39 AM   #5
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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
has anyone ever told you that you talk shit!
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Old 05-02-2006, 02:48 AM   #6
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Re: Re: gm block

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Originally posted by Burty
B]has anyone ever told you that you talk shit! [/B]
why do you know the differance from a large block v8 to a small block ?
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Old 05-02-2006, 02:50 AM   #7
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Yup, 1 is big and 1 is small plus GM aint Rover you nobba
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Old 05-02-2006, 01:01 PM   #8
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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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Old 05-02-2006, 02:29 PM   #9
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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!
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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Old 05-02-2006, 04:13 PM   #10
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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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Old 05-02-2006, 04:51 PM   #11
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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.
Where Matt? I am seriously 'loooking' at options at the minute...
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Old 05-02-2006, 04:58 PM   #12
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http://www.worldcastings.com/new/feature0307.shtml
http://www.worldcastings.com/newstuff8.html
http://www.worldcastings.com/docs/05_cat_pg38.pdf

I know of 1 guy with an Ultima who has one - loves it.
Tese are auto motors though - I suspect ya'd want to turn down the cam to give more torque on a boat engine.
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Old 06-02-2006, 10:14 AM   #13
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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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Old 06-02-2006, 01:08 PM   #14
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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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Old 06-02-2006, 01:25 PM   #15
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That's your decision to make is it?

Quote:
Originally posted by MikeyFIN
End of discussion
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Old 06-02-2006, 01:37 PM   #16
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Quote:
Originally posted by MikeyFIN
Hmmmm should I put it in a Smuggler 21 SS and enter Classic Offshore


Mate of mine had a Smuggler 28, quite a nice boat.
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Old 06-02-2006, 01:40 PM   #17
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More Likely a mate of yours was a smuggler aged 28!
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Old 06-02-2006, 02:50 PM   #18
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Quote:
Originally posted by Tony Davis
Mate of mine had a Smuggler 28, quite a nice boat.
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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Old 06-02-2006, 03:02 PM   #19
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Quote:
Originally posted by Matt
That's your decision to make is it?
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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Old 06-02-2006, 03:58 PM   #20
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Re: Re: gm block

Quote:
Originally posted by Burty
has anyone ever told you that you talk shit!
burty the **** talking out of his arse or is it mouth vant seem to see any differance
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