The fuel pump on big block Mopars is driven by a short push rod. Over the years, this rod becomes worn and eventually results in poor performance of the mechanical fuel pump. I checked the 1964 Manual and couldn't find a spec for the rod so I'm reduced to identifying a possible problem while lacking the ability to define it. Phil Brust 73 & 82 Imperial ----------------- 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