When I purchased ,my car , I was told that it was a number matching engine, I spoke to 3 of the 4 previous owners, the only person not contacted was the original owner who is no longer alive. Anyway I sent for GM documentation just recently and the engine # came back as 816632634. I checked the block, and the number on the block is 816633634. How are these numbers decoded? Do they have to match exactly? As you can see they are very similar only one digit different. I thought maybe a typo error from GM?
It would just be a typo on the big guys behalf. The same was true when i sent away for one of my original low mile 6cyl cars. IT was missing a digit in the center. I contacted GM and explained. They issued me a corrected copy.
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Beaumontguru
MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH. The other one has a longer roof.