I have a 93 Z28 and i have been racinga little...It is an auto tranny and when i go through my gears i hit the rev limiter or i got to let off to shift. What can i do to stop it from doing that its costing me in the race.

 

probably low on fluid.. check the fluid with the car running, make sure its hot and run the shifter through the gears and then back to park then check it. I'll bet its a couple quarts low.