Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
That's just a casting leftover. Chevy didn't spend a lot of time dressing those up. They just break the casting sprue (the part that the molten metal gets pored into) off as close as they can and call it good.
Kevin Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com] #2 - '29 Ford pickup restored from the ground up. First car '29 Ford Special Coupe Busting rust since the mid-60's