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Old 05-24-2006, 07:01 PM   #1
BowTieMan
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400 question.

A guy at my work said he was looking to get rid of a 400 with a 877 casting. Can somebody please give me some details on this block?
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Old 05-24-2006, 07:35 PM   #2
JimKshortstep4x4
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Re: 400 question.

I don't have a 877 listing but there is a 3380817 small block 400. It is a 2 bolt main with three freeze plugs per side. It was used in 73-76 cars and 75-80 trucks. All other 400 small block last three numbers were really different.

Can you verify the casting number and date?

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Old 05-26-2006, 03:43 AM   #3
68c10owner
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Re: 400 question.

It`s probably as 817 block. I`ve got one I was going to build into a 377 and I talked to a guy who has a race engine shop and he said they are decent blocks. everyone wants the 509 casting ans he said he could`nt find anything different between them.
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