437:Dirt Preview,Lineup released after cup and truck heat races get washed away by mother nature

We are gearing up for a wild weekend of nascar cup cars and nascar camping world trucks to get dirty on the Bristol dirt track. Kyle Larson is the pole winner for this weekend but had an engine change,so he will fall back for the start of the Food City Dirt Race. And also,Mother Nature (nickname the weather) better not ruin this one of a kind return to roots race at Bristol.