318 LA Timing

first, check make sure balancer ant slipped and top dead center is true!, 2nd check timing chain gears are marked correct, theres a bunch of timing chains out there thats marked wrong! friend had a new chain on a chevy last week that was marked a 1/4 turn of the crank off! if it runs 180 off but ruff it probably ant 180 out, maybe a tooth off!! cant be 360 out, thats a full circle!