There is extra material on top of both valve covers around the fins and the script.
On one valve cover the extra material is mostly on the script at the CHE and LET. This is the top cover in the photo.
On the other valve cover, the extra material is mostly near the OLET and on the fin below. This is the cover in the bottom of the photo.
For reference, see our regular Chevy Small Block, 1959 to 1986, CHEVROLET Script and Fins, As-cast, PML Part Number 10430.
These valve covers can be machined for PCV, breather and oil fill holes. See this PDF for details and call to order these valve covers with holes.
A gasket is available.
This special should fit and function like a regular part.
This is sold as-is and cannot be returned.
Top view of valve covers.
Inside of valve covers.
Extra material on script of first valve cover.
Extra material on fin and script of second valve cover.