ok today i was driving my car and i got on it and it usually shifts at 4200 rpm but it went to 4500 rpm and it felt like it sliped into 2nd. and when im on it going from 2nd to 3rd it wont shift at wot. i have to let off alittle. y would it be doing this?

 

noone know's?

 

Not enough oil going to the 3-4 clutch pack. The Corvette servo will help with this, by redirecting more of the oil to the 3rd gear clutches. The other ways are the Trans-Go Performance Shift kit, and larger boost valves. These things are what can be done withput going into rebuilding the transmission.