Thread: 1969 350 5.7 small block but which one is it??

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At the time of manufacture, Chevrolet stamped a number on the block deck. You can find it just in front of the passenger side cylinder head, probably under the alternator. That number will give you the skinny on the origin of the motor. If you don't know how to run it down, post it up here and one of us will help you.

If the block has ever been decked at a machine shop, the number will have been cut off and you're outa luck.

I think I'd start with the basics and do a compression test on the motor. Warm the motor up, remove all spark plugs, wire the throttle blades wide open, disable the coil and do a compression test on all cylinders.
http://www.search-autoparts.com/sear...l.jsp?id=16170

Edit: I see you have already posted CHN on another thread and it doesn't come up in the lists I looked at. I'll keep looking for you. Are you sure it's CHN? Here's a page showing where to find ALL the numbers on a small block Chevy....
http://www.73-87.com/chevy_ids/sbcid2.htm