We were able to drop the 60ft times from 1.38 to 1.34 by reducing air pressure.
We run Good Years 14 X 31 and had been running them at 8.5 LBS. I called Good Year tech and they recommended 6.5 - 7 lbs. We have been reducing pressure by .5 lb.s each time out to see if the car gets hard to handle on the top end. So far, no effect on handling at all, and we are at 7.5 lb.s .
If we get back out 7 lb.s next shot.

Mark

P.S.and we may switch to a Dominator carb and intake.