NHRA VAVEL

2016 NHRA Northwest Nationals: Pro Stock Qualifying Session One Gallery

Images from Pro Stock's opening Qualifying sessions at the 29th Annual Protect the Harvest NHRA Northwest Nationals at Pacific Raceways.

Two pro stock cars do its burnouts to warm up before making a run down the track.

By Brandon FarrisAugust 8, 2016 9:49 PM ET

The newly updated rule package for the Pro Stock category for NHRA made its official debut in Seattle this weekend for the first time since being rolled out in 2016.