" From: "Armand Eshleman" <aje1@xxxxxxxxxxxxxxx> " " Thanks Jeff, " " I have determined that AMC used two different versions of castings for the " exterior of the head. " The engines I have from 1970 have one less bolthole boss on them that would " bolt the A/C compressor bracket to the head " versus a 1976 401 head which has one more bolthole boss. " " At this point I'm thinking I need to find the compressor bracket I have that " fits the 70 heads. " " The two brackets I have in my site are " " 1. mounts a sanden compressor direct, it's from a late 80s Waggie) " " 2. mounts a york compressor. " " both the above brackets have more bolt holes on them that does the 70 head. " " Any body able to add some enlightenment?? please ?? just shooting from the hip -- i'd try starting with the sanden bracket and seeing what else i could attach it to, to make up for the missing bolt. in the unlikely event your heads have a flat spot in the right place, they could be drilled and tapped for the bolt... that of course would mean taking them off the engine. ________________________________________________________________________ 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