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Old 04-15-2023, 10:11 AM   #11
factorystock
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Location: west coast
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Re: 250 six banger- repair/replace, or?

Quote:
Originally Posted by truckster View Post
I've had cracked blocks that didn't become obvious until they were boiled.
Very good point. All Chevy 6's after '62 and all V8's are "thin wall casting".
Hairline cracks in blocks are just as common as blown head gaskets. I would look for a recently rebuilt six that somebody replaced with a V8.
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