Yes the 12mm hole is used by the AMC mounts, the extra boss went somewhere else. I had to drill my 69 bracket out to the 12mm size and Fastenal was the only place in town who had the bolt! Mark Price Morgantown, WV 26508 1969 AMC Rambler, 4.0L, EFI, T-5 2004 Grand Cherokee Laredo, 4.7L, Quadratrac II "I realize that death is inevitable. I just don't want to be around when it happens!" ----- Original Message ----- > From: "Sandwich Maker" <adh@xxxxxxxxxxxxxxxxx> > To: amc-list@xxxxxxxxxxxxxxxxx > Sent: Thursday, March 10, 2011 12:17:03 PM > Subject: Re: [AMC-list] Pacer motor mounts oddities > > " From: Glen Hoag <hoag@xxxxxxxxxx> > " > " IIRC, there is at least one new motor > " mount boss on the 1975-up block to accommodate the Pacer brackets, > so > " in that regard, the Pacer block was different, but once changed, the > > " same block was used on everything until the next change, which I > " think was for the Eagle front axle mount. I think that extra boss > is > " where the knock sensor wound up on the 4.0 block. > > afaik it's one of the original amc mount holes; i've read several > references to drilling the amc mount out to 12mm [the knock sensor > thread] and getting a metric bolt. i believe the 4.0 normally uses > new holes just fwd of the amc ones. > ________________________________________________________________________ > Andrew Hay the genius nature > internet rambler is to see what all have > seen > adh@xxxxxxxxxxxxxxxxx and think what none > thought > _______________________________________________ > AMC-list mailing list > AMC-list@xxxxxxxxxxxxxxxxx > http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com