Austin Dillon led both NASCAR Camping World Truck Series practices Thursday at Kentucky Speedway.

Dillon's lap at 172.436 mph bested Kyle Busch to top the leader board in the opening session. Busch ran a lap at 172.106 mph, followed by Stacy Compton, Johnny Sauter and Mike Skinner.

The 20 year old grandson of Richard Childress posted a lap at 174.718 mph in Happy Hour with James Buescher second fastest at 174.514 mph. Mike Skinner, Johnny Sauter and Todd Bodine completed the top-five.

NASCAR Camping World Truck Series qualifying is set for Friday at 4:05 pm with the Built Ford Tough 225 on SPEED at 7:30 pm ET.

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