SBC Block Weights (Dart Little-M & GM)

Old 08-12-2009, 04:43 PM
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TheEngineer
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Default 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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Old 08-12-2009, 05:15 PM
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OneBadGMC
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http://viewer.zmags.com/publication/...#/0ede9029/136
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Old 08-13-2009, 10:01 AM
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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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