the ticking is lifters.possible causes.not enough or bad oil,one of the bolts that holds down the rocker arm assembly has pulled the threads and is loose,lifter has sluge in it.last possibility some one screwed up when putting car back together after changing valve stem seals. first i suggest changing oil and adding lucas heavy duty oil additive 5 qts oil and 2 qts lucas.this is your best shot at a cheap fix .if this doesn't work the valve cover needs to come off for exploratory surgery. david poole european performance dallas tx.