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Block identification

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Old 09-08-2013, 08:27 PM
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Default Block identification
Hey guys, I bought a c5z about a month ago and noticed the block has been painted black and it has 862 casting number heads. So I've been trying to find somewhere on the block that can tell me what block it is. Hopefully its the original ls6 block, but I know 862 heads came from the 5.3's. Whats the EASIEST way to find out what block this is? Thanks fellas
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Old 09-08-2013, 08:51 PM
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If it's painted, are you sure it's even aluminum?
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Old 09-08-2013, 08:57 PM
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I'm not sure of anything.
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Old 09-09-2013, 12:54 PM
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Anyone?
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Old 09-11-2013, 07:47 PM
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magnet on the block to check if it's iron?
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Old 09-25-2013, 12:20 AM
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yeah first thing i would do is take a magnet to the block and see if its iron. if it sticks, you know immediately that its not the original motor.
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