The closed chamber design of the 516 heads are what make them desirable now. Rob McCall '67 LeBaron -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of Frederick Joslin Sent: Saturday, January 20, 2007 1:16 AM To: mailing-list@xxxxxxxxxxxxxxxx Subject: Re: IML: BIG BLOCK PARTS It is interesting that the 516 (up to 1967) heads are the most expensive listed. These heads used to be very undesireable. ----------------- 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