Cowl Plenum breather identification???

[Zedder]

Last one...

[ssl78]

If I remember right a Chevelle air cleaner has 5 cut outs inside the duct where a Camaro has 4. That is a Chevelle duct a Camaro has a flange on the top mounting it sits on the top of the firewall.

[wheelhop]

A chevelle would have used the same one as a larger car like an impala. They weren't exclusively for Chevelles.
Greg Cullum who is a member on this site has a couple of these and he could probably ID it for you.

[3macs1]

Zedder. Terrytown Steve on the site has an original one off a 68 impala if I remember correctly. It looks the same to me but if he will chime in that will clear this up for you
take care Joe

[Tarrytown SS427s]

Hi Guys,
Here are some shots of the cowl plenum duct off my 68 427 Impala.




For some reason, the metal A/C base in your pictures looks different from mine. I will get it out later and compare it to your pictures.
Steve

[68Biscayne427]

Steve, does that plenum fit both the Holley and Q-jet carbs?

Rob

[Tarrytown SS427s]

Hi Rob,
I laid the base over a Q-jet and it fit perfectly with no interference. The carb however was not on an engine. I would assume this one would work on a 385HP engine, becuase I recall Jon Krogh telling me a while back about a 68 385HP SS427 that had this air cleaner originally. After comparing mine to the one in Zedder's pictures, I see that mine is identical. I think the air cleaner bases are the same for all applications, and the duct is the difference.
Steve