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Thread: SBC Block Weights (Dart Little-M & GM)

  1. #1
    Senior Member MASTER BUILDER TheEngineer's Avatar
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    SBC Block Weights (Dart Little-M & GM)

    The Dart data-sheet lists 205 pounds with 4.00" bore for the Little-M Sportsman.

    So, what does the Little-M sportsman 400 block weight with the 4.125" bore (should be a little lighter)?

    And, what does the GM blocks; 400 (4.125" bore) and GM 350 (4.00" bore) w/ 4-bolt main block typically weight?

    Thanks,
    Warren

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  3. #3
    Senior Member MASTER BUILDER TheEngineer's Avatar
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    WJ,

    Thanks for the GMPP link. It looks like a GM 350 is 181 pounds and their 400 is 196 pounds.

    I called Dart and they said their 400 block (4.125") should be around 197 pounds. Basically 8 pounds lighter than their 350 (4.00" bore).

    Warren


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