moved the engine so that the timing marks on the balancer and the timing chain cover line up...
pop distributor cap to see if rotor is lined up with no 1 on distributor cap...
how old is your balancer? the outer ring on the balancer might have slipped if it really old...i had a 318 do that...could not time with a line...but ran great went timed by ear....
the outer ring had slipped....
so make sure no 1 on the balancer is no 1 on the distributor....