[twertsy]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: iluv69s</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TimG</div><div class="ubbcode-body">Of course, there are some &quot;virgin&quot; over the counter blocks that have original broach marks. These would not have to be ground to stamp them. One well known 67 L88 that lost its motor has a correct build stamp long block in it. The person that had the car restored years ago chose not to stamp the VIN on the block. </div></div>

yes, I have a correct dated virgin NOS complete 67 Z28 302 with the broach marks and date code and MO stamp for my 67 Z28, It has never been stamped with a VIN. (and never will)...
....those types would be hard blocks to tell a non-original Vin stamp if done correctly... [img]<<GRAEMLIN_URL>>/dunno.gif[/img] </div></div>

I've already begun the process of setting up some experiments. I'll add this scenario to the list. Perhaps we can figure out a technology to &quot;date&quot; a stamp. A 40 yr old stamp may appear different under certain conditions than a 5 yr old stamp? We'll stamp virgin iron and see if we can detect a difference.