Line Lock with Drum Brakes ?

I think that's the point of this post. OP does not want to use foot breaking and burn up his rear brakes.

Killer6 was noting that when he foot brakes it he can do the burnout so the ability of the fronts to hold the car is not in question.

And yes he is applying 4 brakes but he is only using 2 to hold the car because he is overpowering the rears during the burnout.
EDIT Sorry Dana, for some reason my brain was thinking "staged and launch" instead of burnout. Ignore the below..........

You missed the point. He was trying to claim that if it works foot braking, and not with the line loc, that there is nothing wrong with the brakes. But foot braking, he has four brakes. It proves nothing. Foot braking BOTH FRONT AND REAR brakes are active. Of course they hold better.