To add a little to Mike's excellent reply, the two vacuum fittings mentioned are "ported vacuum" and manifold vacuum. The proper one for the distributor vacuum advance is the ported vacuum, the other must be capped if it is not in use. Ported vacuum can be identified by the characteristic that there is no vacuum present at idle, vacuum appears only when the throttle is partly opened, in other words when you are stepping on the gas a bit. This is because the distributor is not designed to provide vacuum operated spark advance except during acceleration. Of course if these two ports are exchanged, the initial timing can be adjusted back to specification at idle, but if this is done, the car's performance will be quite poor, as advancing the throttle will reduce the vacuum advance, not increase it. Off idle performance will be noticeably reduced. Dick Benjamin -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of Mike Pittinaro Sent: Wednesday, September 29, 2004 1:15 PM To: mailing-list@xxxxxxxxxxxxxxxx Subject: Re: IML: Help: 1968 Coupe Carburator Installation > I am replacing the carburetor on my 1968 crown coupe > with a new Edelbrock Performer series carb. I have > the Carb, the throttle cable and linkage cable > parts. > Am I missing anything? Spacers? Fuel lines? any > help would be great on this... thanks. Not hard...I recently replaced my Holley 4160 with the Carter AFB..similar swap, I imagine. The edelbrock performer requires a fuel hose be spliced into your existing fuel line. Your current carburetor probably uses a screw in fitting. You will need about 2 or 3 feet of 3/8" fuel hose, and two screw clamps for the ends, to connect the existing fuel line to the carb. Make sure you put a fuel filter in the line! You also need the Mopar automatic transmission kickdown linkage adaptor, from Edelbrock. Other than that, the carb will bolt onto the existing studs, the throttle cable will attach right on...you may need to plug some of the vacuum connections to the carb with little rubber stoppers, if they won't be powering anything. You will have two ports on the front of the carb for distributor vacuum advance...plug one, use the other. One is a timed advance, the other is a full advance. I find my 67 runs better off the timed advance, but its a bit of a trial and error thing. ===== --Mike Pittinaro Beautiful Boxcar American Grandeur and Danish modern Style __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail ----------------- 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 ----------------- 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