Quote:
Originally Posted by Toshab
I've never heard of this. What kind of numbers am I looking for?
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Here, these pages should help. What you are looking for is the casting number on the back of the block.
Where to find the numbers:
http://imageshack.us/photo/my-images...01eu3.jpg/sr=1
What they mean:
http://www.nastyz28.com/sbchevy/sblock.php
Keep in mind, the casting number and block date code are raised since they were part of the mold. The engine ID on the front pad are stamped.