Interesting to note as many of you may know, they supplied air cowl plenum with a template for cutting cowl hole, and the 68 plenum air box base had the indent for the smog pump but the tubes when attached to the ex. manifold hit or interfered with the large plenum air box, so as aforementioned the smog system did not work. In Jerry's one fact book there is a picture of a 68Z with smog system and air cowl plenum. I asked him many years ago how they did that and it was something like using smog tubes on right side from a 71 Nova smog system if I remember correctly.
Jerry has one of the very few 68Z's that came with the option of headers and air cowl plenum as Joe posted. When restoring our 68 Jerry let me review and take pics of his car which I greatly appreciated.
Jerry has one of the very few 68Z's that came with the option of headers and air cowl plenum as Joe posted. When restoring our 68 Jerry let me review and take pics of his car which I greatly appreciated.





