Chevrolet 4.1 GMSA Block Numbering

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Joined: Sat 14 Aug 2021, 07:47

Chevrolet 4.1 GMSA Block Numbering

Post by ChevRover » Sat 14 Aug 2021, 07:56

Good day all,
I am hoping some clued-up Chevrolet-loving person can help me to identify or understand the Casting number on a 4.1 Chev engine that's in a truck I am renovating. It is 3427481 (GM) - I will try to upload a pic of it -
Thanks to anyone who can help.

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