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- - block casting number (https://67-72chevytrucks.com/vboard/showthread.php?t=833849)

Bobbysgmc

04-27-2022 01:30 PM

block casting number

I'm trying to identify a GM block.On the drivers side rear block it has (top row) 5GM.Second row,39 space 6618.I would post a picture if I can figure out how to do it.

Palf70Step

04-27-2022 02:57 PM

Re: block casting number

Near as I can figure it could be a 2 or 4 bolt 68-69 327 or 69 350.

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