early 60's jag question!

when a leaping kitty (jag) breaks a lower timing chain what else follows suit?
this is in a jag saloon of theearly 60's.   a friend in south jersey has had
her jag sitting for over a year due to the alleged breaking of a lower timing
chain.   seems that besides an engine-ectomy  to take the motor apart it
should not be too difficult to do.   unless this failure takes other major
components with it?

chuck.