Interesting air cleaner on this 273 Dual Quad

4spdragtop said

I bought same NOS dual quad thinking I could use on my 340 build(x heads)....not a chance lol. Like you said the outside of the flange vs the port, you could see daylight lol. So it went on 273 for a short stint lol.
I love the looks of them.
Intake gasket is Felpro 1213, 340 size.


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I'm not real familiar with small blocks.
Are those port pictures right side up, or upside down?
in other words, are the 340/360 ports taller than 273/318, and slightly wider??
I have a tm7 440 manifold that has had a slug of aluminum added to the top of the port, to work on a max wedge head. Top of the port with added material is fine, bottom of the port, the manifold is razor thin.