My dart in 1990. I went 11.94@ 117 mph and got yelled at, told to slow down or go home. It had 3.5 gears, McCeary dirt track tires, no roll bar, no drive shaft loop, just lap belts and I had an un certified helmet. They told me to stay over 12.oh

On top end I had all kinds of leaves swirling around in the car, guess 117 mph was enough to blow out vent grate since I had just removed the heater