Magnum head gaskets

Max1196 said
Is your block or heads "O ringed"?

It isn't. Just noticed that on the gasket. Looks like I may have been over thinking this. Looking again, it looks like these are punched out to 4.140, so I'm assuming it covers the over bores. Still wondering about best thickness..

Edelbrock 7327 Edelbrock Cylinder Head Gaskets | Summit Racing