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Old 04-17-2001, 08:48 PM   #1
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How much lighter is an aluminum block vs. an iron one?
thanks
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Old 04-17-2001, 09:08 PM   #2
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standard 350 block is 197 LBS. aluminum 350 block is 90 LBS.
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Old 04-17-2001, 09:32 PM   #3
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I searched and found my post

I weighed the 350 4-bolt block I have, theres nothing in it besides the main caps, bolts, and cam bearings, and it weighs 157lbs. I dont know if zippy was talking about a bare block or what, but thats what mine weighs.
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Old 04-17-2001, 11:52 PM   #4
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this is from the gm performance parts book. 350 4 bolt block one piece rear main without the seal adaptor. part no. 10105123. lists it as 197 pounds.
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Old 04-17-2001, 11:56 PM   #5
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Heh... thats exactly what I have....
I wonder where the extra 40 is coming from? Hmmm...
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Old 04-18-2001, 12:20 AM   #6
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Occasional afternoon beers...
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Old 04-18-2001, 12:20 AM
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