I used a line lock on the rear brakes of my 1970 Chevelle. But then it was a FWD car
Originally posted by poncho62
Line lock is a solenoid that actually locks the front brakes, so that you can do a brake stand and warm up the rear tires. As long as you hold the little button, the front brakes will stay on.
It's also used to prevent the car from taking off of the starting line too soon and can be used as a hill brake.