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Old 01-26-2011, 08:20 AM   #11
Darrin Christen
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Default Re: Dart blocks for ss?

I might be mistaken, but I think the Dart Little M is heavier than the bowtie when comparing apples to apples.
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Old 01-26-2011, 11:41 AM   #12
richie 2
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Default Re: Dart blocks for ss?

advertised little M SBC @ 4" bore, bare block is 205lbs. bowtie?
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Old 01-26-2011, 11:58 AM   #13
ron mattson
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Default Re: Dart blocks for ss?

dont know about the weight they are both heavy, but the quality of current bowtie
blocks is outstanding, cnc machined, completely deburred and very accurate from
the get go. The shp block from dart is a good block also, not quite the same as a little
m but way lighter and cheaper and still a good piece, not on the list but i spoke to a guy
at dart and he said the had talked to nhra about approval? anyone hear about this?
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Old 01-26-2011, 12:27 PM   #14
FED 387
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Default Re: Dart blocks for ss?

181 bowtie block weighs 187 pounds per GM----comp
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Old 01-29-2011, 08:09 AM   #15
Rick Leininger Jr.
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Default Re: Dart blocks for ss?

Quote:
Originally Posted by richie 2 View Post
so are they legal for SS now? i can get a 4" bore unit reasonably priced and would like some "classracer" opinions on going in that direction please...
I'd use whichever block can be decked the most.
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Old 01-29-2011, 09:28 AM   #16
carl hinkson
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Default Re: Dart blocks for ss?

Quote:
Originally Posted by Darrin Christen View Post
I might be mistaken, but I think the Dart Little M is heavier than the bowtie when comparing apples to apples.
The Little-M and the 2503 Bowtie block are both appox. the same weight we have worked on them both. We have probed both out for locations such as cylinder locations, deck heights, cam tunnel placement, lifter bore placement and both seem to be very peices.

The Dart SHP blocks are about 600.00 cheaper then the Little-M Sportsman and about 8 or 900 cheaper then the 2503 Bowtie block.

The Dart SHP blocks weighs around 180 pounds on their 4.000 bore block.

We have machined about 125 plus of those blocks since they came out and so for none have had any issues to date. Sure beats sealing with the old 400 OEM blocks!!!
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Old 01-29-2011, 09:31 AM   #17
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Default Re: Dart blocks for ss?

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Originally Posted by Rick Leininger Jr. View Post
I'd use whichever block can be decked the most.
The most we have decked of the 2503 Bowtie block was .250 it was far a sprint car build and the upper water pump bolts holes the threads were right there.
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