everytime i shift hard the tranny makes a squeeking sound everytime i let the clutch out... 2nd 3rd and 4th, idk what it could be i just changed the tranny oil and all that, anyone know what it is?? anyone else have this problem?

 

This is most likely the throwout bearing on the clutch, probably not a transmission issue. The transmission can make this noise, but it is the countershaft bearings (in an advanced state of wear) and does not make the noise under light throttle or in 4th gear.

The guys in the first gen forum may know better (depending on the year of the transmission).

 

its just the stock 88 tranny