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Old 10-12-2018, 12:12 AM   #1
Richard8971
Still livin the "dream" in '54
 
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Join Date: Nov 2006
Location: Tucson, AZ
Posts: 2,656
GMC 270 engine mystery.

I have a '48 GMC 300 series truck. The
motor has been replaced with a 270.

GMC engine serial numbers are hard to come by/interpret. Here is the only block number I can find.

Can anyone help ID so I can maybe figure out what parts I need to order. Thanks.

From what I have read, they made a couple of different types of 270's over the years.
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