I have a 1980 vintage targetmaster 350/4bbl I picked up for my buick wagon,i just picked up a 455 buick and no longer need the chev engine,it is supposed to have an upgraded cam (rv)and is supposed to be 4 bolt main,complete except for starter.I have never heard it run,it was stored by a Kincardine car buff for a project but he never ended up using it.Turns easily and has been oiled well inside,will throw in a set of headers as well and new motor mounts come with it $600.00 obo for the pair,will take partial trade for a set of 455 buick a body headers,or buick 455 manual flywheel..