I have 87 astro 2.5 leter had a stroke
so bear with me. any condition engine
cold or hot i only hear the tapping when
I take off slow can,t here it @ normall
highway speeds I,m hoping it,s only a
vavlve tapping Please don,t tell it,s a
rod getting ready to blow

I would like your help it,s not using or
burning any oil @ I change <the oil>
every 3,000 miles

Or is it a rod knocking?