Intermittent rain showers Thursday kept Sprint Cup Series cars off the track for another day at Kentucky Speedway and postponed qualifying for the UNOH 225 at Kentucky Speedway.
 
With qualifying for the Camping World Truck Series race washed out, the starting lineup will be set by points, putting two-time defending series champion Matt Crafton on the pole.
 
The UNOH 225 is scheduled to start at 7:43 p.m.
 
If the rain holds off Friday, and there are no further changes to the schedule, Sprint Cup teams would have two practice sessions totaling 2 hours, 50 minutes to turn laps before LiftMaster Pole Day qualifying for Saturday's Quaker State 400 presented by Advance Auto Parts. The first session is scheduled to start at 10:30 a.m. and run until 11:55 a.m. The second session is scheduled to run from 1 to 2:25 p.m.
 
Sprint Cup teams and drivers have yet to get on the track since arriving in Sparta on Wednesday.
 
The original schedule included a pair of two-hour practice sessions Wednesday to get familiar with the new aerodynamic package NASCAR is using this weekend. The new rules package aims to lower downforce by shortening the spoiler to 3 ½ inches from 6 inches and reducing the size of the radiator pan from 38 inches to 25 inches. The splitter will have 1 ¾ inches less overhang than in other races this season. Wet weather and unsuccessful attempts to dry the track forced NASCAR to postpone those sessions until Thursday.
 
"I think we'll need some practice on the race track to race this package because we have gotten as close as we can with the setup and the springs and the shocks and the wedge and the front swaybar as we could possibly get," Greg Biffle said.
 
The driver of the No. 16 Roush Fenway Racing Ford said the bumpy track surface is not a concern with the new rules package.
 
"Some people said this may not have been the ideal spot with how bumpy it is with flat corners and what-not for the aero package, but I think it's going to be a good package for here with the surface. We just have to get rid of the rain so we can get out there and experience it."