A: Steve, you are not supposed to hook the vacuum advance up to manifold vacuum (highest at idle) You need to hook it to ported vacuum (near zero vacuum at idle, and it jumps up as you open the throttle) There are adjustable advances out there (check for @'75 Ford stuff on Jegs or Summit or someone on the AMC parts supplier list) From: "steven rideout" <steven.rideout@xxxxxxxx> Subject: [AMC-List] Vaccuum advance To: <AMC-List@xxxxxxxxxxxx> Message-ID: <002101c6616b$baeb8530$75a3c5d1@rideout> Content-Type: text/plain; charset="iso-8859-1" How much additional timing should be added when the vaccuum advance is connected on a motorcraft electronic distributor I have my timing set at 12 degees initial and when i hook up the vaccuum it jump,s to 40 is this normal does anybody know if they make an adjustable vaccum advance for this distributor Steven Rideout Ont/Can 1973 AMX Jim Blair, Seattle, WA '84 J10 Black Jack (getting lifted and stroked!), '73 J4000 304/TH400/QT tow truck http://www.virtualjeep.com AMC list subscription options link http://www.amxfiles.com/amc-list/options.cfm _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.wps.com/mailman/listinfo/amc-list or go to http://www.amc-list.com