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 First car '29 Ford Special Coupe #2 - '29 Ford pickup restored from the ground up. Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com] Busting rust since the mid-60's