Ive only had it on the track once and ran a dismal 8.56 in the 1/8th but it went 90mph. That was on pumpgas with a bad tune on 8-9lbs. Now that my tune is better I have ran 18lbs on 100ll avgas but only on the street. My 60' sucks because I cant spool until 100ft out so I havent been back to the track until I get a tranbrake. I would like to try 3.23's but I think my highway rpm is still going to be too high. I only turn this motor 4700, it likes to be shifted like a diesel lol. My 360 will turn alittle more but will still be limited due to iron heads.