Timing control

I'm running a 526 Brad V with a K-11 35% over in a 3200lbs door car convertor driven, I also run a 10.5W's. My question is I'm running a 6 shooter with a manual timing control box. How much timing do you guys leave the line with approximately? and how fast do you put it back? From past experence I was gonna start with leaving the line on 20 degrees and putting 9 degrees back with in 2 seconds! thanks

 

I am just curious what is your gear ratio at launch, trans and rear?

I ask because I am amazed you can leave with that much timing in the motor on 10.5s

 

my rear rear is a 4.10 and my trans first gear is a 1.40

 

it doesnt seem out of line if it leaves ok a friend was having trouble getting his down track so i had him knock 8* and ramp it back in in about the same time and it went right down with no problems without doing it that way it was just to violent leaving his was a blown automatic door car about 2800lbs