For what it's worth my car is foot brake only. Geared 2.45, 4.30, 10.5x31. Leave RPM is how I vary R/T. Usually 2800-3200. This will most often put the R/T average in the .02x range. 60ft depends on how much ballast, track prep, and how good the air is. Sometimes air conditions and weight seem to vary 60ft more than track conditions. Slowed to 9.25 it'll 60ft 1.29-1.32 depending on ballast. Car can weigh from 3325-3500. Flat out in good air 1.25-1.26. My bet is good air is giving it some wheel speed. Pulled back it dead hooks.
Doug