Line Lock with Drum Brakes ?

Dana67Dart said
Since you have an extra foot.

How about put the line lock in the rear line. Turn it on with no brake pedal pressure before you do your burn out.

Left foot the brake pedal, only front brakes will be on.

Do your burnout.

Turn it off, and stage

The few line locks I had would allow pressure to keep going through but not back, so you could pump them up. So if the pedal is pushed it would lock the back ones up. Maybe the new ones are different?