Assembly line correct 69 big block fan shroud info needed

[l88z16]

I found an nos fan shroud with the old style blue GM sticker and the part# 3947619 stamped in it.How would I tell if it is assembly line correct???I have heard there are variations in the texture of the plastic.Thanks

[william]

One difference: current '69 service shrouds have 3 horizontal beads molded into the top near the edge. They are easy to remove.

The service part number as of the early '90s was 3938615.

[l88z16]

Thanks William.