Originally Posted by Marcos.J

i ran my orion 10.5 with 1mm advanced timing at a 4.78 FDR and it came off the track at 174 degrees after a 8 minute main it had mad rip out of the corner and plenty of speed at the end of the straight (160 feet) i may go up another tooth on the pinion at the next race we'll see, the 13.5 was in the high 3'sFDR