340 6 Pak intake
Notice the OEM intake vs my last round run of the Edelbrock intake. The are to look at is at the bottom of the carb stand where it meets the intake runner. There is machining done there for some reason and it’s overkill. If not ugly. My “MoPar” intake vs an Edelbrock intake vs an OEM should all perform the same. Any variance is in any core shift, which I have not personally seen or heard of or smaller ports that have protruding aluminum. That is when the sand casting is slightly worn away.
The only difference after what is embossed is the price you paid and if any mods were done.
