Heh...despite my being younger than any of these cars, I have heard of a road draft tube. However, I believe on the 67 Imperial the PVC tube leads directly into the carburetor. On the 68 air filter cover, the tube goes into it. > The PCV valve was mandatory for CA cars starting in > 61 (as I recall), but it > became a federal requirement a year later. The > purpose of that system is to > prevent crankcase fumes from escaping into the > atmosphere via the "road > draft tube" that was on all cars until the PCV > system. --Mike Pittinaro "Forsake Inhibitions. Pursue thy Dreams." __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm