Hi,
That old Chevy probably had hydraulic lifters.  Tighten 3/4 turn or so
after the clacking stops.  I think you need the feeler to get solid
lifter clearances right.  Someone correct me if I'm wrong.
Cheers,
Derf
>    We always set old straight six chevys while they were running.  I
even
>had a valve cover with a wide slot cut in the top to use to cut down
onthe
>oil splash.
>ANyone ever set MGs like this.  Usually we'd use a feeler guage, but
>sometimes only did it by ear..ease down until the clacking stopped.
 
 |