Were going to be running on a 150ft indoor clay oval flat track what would be a good starting rollout for 6 cell stock gbx CW car and what about 19turn on the same size track..Thanks for the help.

I have ran at Coopers, not sure what their run line is. But I am running a 2.40 tranny CW GBX LE chassis. 104 spur 43 pinion with 2.55 tires. I was running a good Monster, 65w on Fantom. Seemed about right to me. Hope this helps.
Kevin