Was emissions equipment required on 1968 Camaros?

No, emissions equipment was not required on 1968 Camaros. The first federally mandated emissions controls didn't come into effect until the 1968 model year, but they were only for California and applied to *some* vehicles, not all. The 1968 Camaro was not subject to those initial California requirements. Widespread, nationwide emissions standards for passenger cars came later.