" From: Doug Dornbos <dornbos@xxxxxxxxxxx> " " Thanks! That is EXACTLY what I need to do, put a 4.0 head on a '73 " block. do you remember if the head bolt size needed to be changed? head bolts are 1/2" on all '64-'06 sixes except '81-6, which were 7/16" instead. that can be handled too. ________________________________________________________________________ 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@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list