2 at the least. Depends on the type of tires. I run my et streets through 2nd and 3rd real quick to heat them up. I don't have line lock either. You could do it in what ever gear you want as long as your tires don't start to hook. But if you mean at the track you could just do it in 2nd for 10seconds.
I HAVE A SLP LINE LOCK AND 3:73'S. I ALSO HAVE NITTO DR'S AND I DO A 2ND GEAR BURNOUT(WITHOUT GOING THROUGH WATER BOX) AND HEAT THEM UP 8-10 SECONDS, LET THE LINE LOCK OUT AND ROLL OUT TO THE LINE.
sweet thanks......just got my new Diff, with new axels and gears....i'm finishing up the line lock install tonight.....then going to test em out !! (there will be footage)
alright all the stuff is installed......wondering if there is anything "specific" i should notice.....i haven't really tested them....but the car seems to drive the same.......