I got a 76' Camaro that has a problem of going from the 3-4 gear to 2nd gear at random times. (Never does this when I am slowing down, only when I hit around 2500rpm or 60 mph) It also only does this when the car has warmed up.(usually about 40 minutes of driving)I cleaned the modulator and replaced the transmission filter and plan to clean the governator once I get off work. The transmission is for a 350 and is automatic with a shift kit and I was wondering if anyone knows what to do. (It still down shifts when speeding, after cleaning and replacing things, I was told that the transmission is fine cause if it was going bad it would do it all the time not just when warm.)