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 Post subject: Re: Dart Block
Posted: Tue Sep 13, 2011 10:51 pm 
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chris sieclay wrote:
kind of depends on how you want to look at it you see..
the 5litre roller blocks 86 onwards can handle about 300 rwkw (400rwhp) before they want to start grenading, just ask the short track guys in the U.S that have to run regular production blocks.
The weakness is in the webbing, its a very thin casting making them particularly light for a cast iron V8, they were cast thicker in the early days so the older a Windsor block the better they are for power production.. they are good for around 530 horses/7000rpm.. with a mains cap girdle :P

1974 and earlier 351 Windsor blocks are capable of over 650 horses but pushing them beyond that and screaming them beyond 7000rpm needs a 4 bolt mains conversion.
The 1975 and later blocks are cast thinner around the webbing and roughly 4.5 kilo's lighter but you'll still screw 550 horses out of them but cant accept 4 bolt mains so you still gonna have to go for the mains cap girdle wisely.
anything over 30 thou on a cleveland bore and you'd be pretty nervous trying to apply any power out of it.
Of course we all know the guys that have squeezed more out of them, but i'd be getting pretty jittery after 600 horses.


We're talking about cleveland blocks not windsors.
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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 12:41 am 
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ah ok :) well in that case its just crappy wall thickness.

 

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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 1:30 am 
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That's why I mentioned checking core shift but, as I said the later blocks are much better.
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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 10:19 am 
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XR9UTE wrote:
That's why I mentioned checking core shift but, as I said the later blocks are much better.


yeah.
you know it be nice to get hold of a mint clevo block, back in my teens they were everywhere.
you know how it is, if your on a budget on a parts for parts basis just using factory gear the clevo wins out hands down, just that there's so much aftermarket stuff out there for Windsors.
Dunno man i reckon i'd still go the dart, its piece of mind, wicked upgrade potential and you're not wanking about trying to find a decent clevo... unless of course you got a sweet one just sitting there.. sigh.
Most people i know always end up with a combination of the two anyway.

 

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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 10:31 am 
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I agree Chris, it's cheap insurance I reckon.
In fact a mate of mine just picked up a 9.5" deck Dart with cleveland mains for about $1900 from A1's here in Perth. For that sort of money there's just no arguing to be done.
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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 11:21 am 
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XR9UTE wrote:
I agree Chris, it's cheap insurance I reckon.
In fact a mate of mine just picked up a 9.5" deck Dart with cleveland mains for about $1900 from A1's here in Perth. For that sort of money there's just no arguing to be done.


Man thats cheap, do they have more?

 

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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 11:51 am 
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Dax wrote:
XR9UTE wrote:
I agree Chris, it's cheap insurance I reckon.
In fact a mate of mine just picked up a 9.5" deck Dart with cleveland mains for about $1900 from A1's here in Perth. For that sort of money there's just no arguing to be done.


Man thats cheap, do they have more?


Probably.
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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 5:27 pm 
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XR9UTE wrote:
Dax wrote:
XR9UTE wrote:
I agree Chris, it's cheap insurance I reckon.
In fact a mate of mine just picked up a 9.5" deck Dart with cleveland mains for about $1900 from A1's here in Perth. For that sort of money there's just no arguing to be done.


Man thats cheap, do they have more?


Probably.


Do these guys have a website or something?
Are these new dart blocks?

http://www.a1hiperformance.com/docs/pro ... rod_id=144
Is this them? Seems a bit more than $1900 :(

 

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 Post subject: Re: Dart Block
Posted: Wed Sep 14, 2011 5:34 pm 
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That's an Iron Eagle they're more expensive but of course they never update their website.
Another mate of mine just bought one today for $1900. That's cleveland main, 9.5 deck sportsman block.
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 Post subject: Re: Dart Block
Posted: Thu Sep 15, 2011 11:05 am 
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Must be the SHP version and at that price its still a good buy...

 

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 Post subject: Re: Dart Block
Posted: Thu Sep 15, 2011 11:33 am 
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MICKYYYY wrote:
Must be the SHP version and at that price its still a good buy...


It certainly is a great buy, ive already been on the phone to them ;)

Thanks for the heads up on that XR9UTE!

 

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 Post subject: Re: Dart Block
Posted: Thu Sep 15, 2011 5:09 pm 
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They emailed me and told me they were sold out and they said that the next shipment will be $2300.

I don't intend to start the typical cleveland vs windsor war but right from the start of planning my build I've been thinking cleveland, But would it be much difference if I decided I want a 500hp 351w? (Should i start a new thread)

Thanks in advance

 

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 Post subject: Re: Dart Block
Posted: Thu Sep 15, 2011 6:54 pm 
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Nope bugger all difference. Blocks are certainly easier to find, at least later 1 piece rear main blocks are and more likely to be std bore.
I know of an EFI 391 stroker windsor for sale that'll make around 550hp for about 8 grand. Which is less than half what it cost to build.
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 Post subject: Re: Dart Block
Posted: Thu Sep 15, 2011 9:29 pm 
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Dax wrote:
They emailed me and told me they were sold out and they said that the next shipment will be $2300.

I don't intend to start the typical cleveland vs windsor war but right from the start of planning my build I've been thinking cleveland, But would it be much difference if I decided I want a 500hp 351w? (Should i start a new thread)

Thanks in advance


Sold out! that was quick, i got on to them yesterday and its on its way.. even at 400 more i'd still get it.

 

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