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Thread: Dart and BOSS block siamesed cylinders...

  1. 06-30-2016, 11:06 PM #1
    aarvig
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    Dart and BOSS block siamesed cylinders...

    Looking at strictly a street performance 427. I notice a lot of the upgraded blocks (DART, BOSS) have siamesed cylinders compared to the OEM blocks that have full cooling jackets. Do the Dart and Boss blocks run hotter on the street as a result of this? I am wondering if anyone has any real world experience with this and wether or not it causing problems in a strictly road performance application?
    Hurricane HM-2016, 9" Ford w/3.50, 427W, TKO 600.
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  2. 06-30-2016, 11:54 PM #2
    Gordon Levy
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    No, the cylinder wall are much thicker than production blocks.
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  3. 07-01-2016, 06:02 AM #3
    Mark Dougherty
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    it is not an issue
    siamesed cyl. bores have been around for a long time.
    remember the old chevy 400 blocks were. they were great engines.
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  4. 07-01-2016, 11:25 PM #4
    2FAST4U
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    Not an issue. I like to,run an electric water pump with the fan and pump wired to continue running after shutdown until the sensors kick off
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