Mecum zl1 #30 at Kissimmee

[iluv69s]

the blocks have the cast sequence number and cast date on the side, but they also has a stamped number on the main caps and rear bellhousing flange that is very significant. It would be hard to fake a ZL-1 motor without knowing the correct sequences whuch seem to not be in numerical order. I was explained (by Ed C. I believe) that these motors were hand built and that the first in/last out method was used in the assembly room, therefore the numbers are not in order. You would probably have a better idea Bruce. please correct me if I am wrong.

Also have seen original ZL-1 VIN hand stamped on the deck of the block..(looks like a child did it)... and my VIN on my original block was more typical and gang stamped on the oil filter area...not exactly rhyme or reason on some of these.