Beemon Posted September 4, 2019 Share Posted September 4, 2019 I found this image of a Pontiac/Buick air cleaner being sold on Ebay and it really struck me as being weird. Ebay: Mine: Note: You can tell the air cleaner in the Ebay ad is for a Pontiac because the mounting nut is on the front face and not on the bottom. What I find interesting is that the opening on the Pontiac is smaller than on the Buick. I wonder if this is because the 322 was larger displacement and had higher inlet air velocities? I know these air cleaner lids were also used on Chevrolet, as well (minus the big silencer). Always kind of interesting to find stuff like this and thought I'd share. 1 2 Link to comment Share on other sites More sharing options...
avgwarhawk Posted September 4, 2019 Share Posted September 4, 2019 The opening of larger diameter my allow more airflow but also produce a certain tone that engineers were looking for? 1 Link to comment Share on other sites More sharing options...
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