"smooth bottom" cowl induction air cleaner???

[Supercar_Kid]

Hard to tell for sure w/o seeing some pics, but my guess is you're actually looking at the air cleaner base for a 67-8 small block Camaro. They were the same diameter as a '69 CI units and shared the similar "flat bottom" stamping, however the air snorkle is situated on the opposite side because of the 67-8 alternator orientation. These 67-8 air cleaners used a large diameter lid to create a closed element design, the 69 CI type used the 14" lid that sits inside the base. FYI, a 69 type CI flange and seal will actually fit right on the 67-8 base unit and can be used with the 14" lid and element, which could be cool if you were trying to retro fit a CI setup on a 67-8 Camaro, just a thought. Happy hunting for a 69 flat bottom, they're getting very rare and very expensive these days. Hope this helps.