These valve covers are on special because the PCV and breather holes were not machined in the correct location.
The holes should be near the top of the valve cover.
On one cover the breather hole is very close to the flange at the bottom.
On the other cover the PCV hole is so close to the top that the inside top of the valve cover is machined, slightly.
The top is thick so there is not any structural problem.
PCV grommet and push in breather are installed in holes and included.
For reference, see our regular Chevy Small Block, Perimeter Mount, CORVETTE Script and Fins Valve Covers, Polish, PML Part Number 11026.
This special should fit and function like a regular part.
This is sold as-is and cannot be returned. Please call to order.
Top view of valve covers.
Inside of valve covers.
Side view of valve covers.
The breather hole on the flange of the first valve cover is too close.
Inside top of PCV hole in second valve cover is damaged from machining.