Engine number?

Posted by David Packard On 2011/2/13 13:55:34

While tearing down my 352 V-8 for overhaul I discovered a three digit number (338) hand written on the side of the block with either a crayon or paint stick. This same number is on the bottom of each piston as well as the cyclinder number each piston was installed in. Is this three digit number a production number of some sort?