Dead spot high RPM's

[scotts93]

first post here.. great site i have dont a lot of checking around and reading but havent found anything like this (very minor) problem...
Ive only had my firebird like 7 months now and thanks to NY driven it only about 3 months... its a 93 3.4L auto engin all stock. did a full tune up when i got it (starting fresh) plugs, wires, air filter, fuel filter normal stuff.. she runs great except when im on it hard around 4k you can feel a dramatic power drop as it pokes up to like 5.5k and shifts (full pedal)... so i dont know if thats normal or what.. any thoughs would be great... thanks

[93redBIRDman]

haha mine does that sorta but its cuz my tranny is shot! slipping like crazy...