For GM cars, these smog systems have a lot of similarites. As an example, the 1968 Z28 used most of the same parts as this one. A member of this forum sent me a picture (shown below) of a complete '68 Z system along with pages out of the judging guide that I reasearched. Tubes and pulley are mine. Those differences include the tubes, bracket and pulley. The Z28 uses a 3925522 deep groove pulley.
Last edited by toylman; 10-23-2025 at 01:09 PM.
Reason: edit numbers
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