Is there an upgraded power window set up for these cars? Mine are real slow. Or are later ones faster? For example on my 84 Vette the windows were slow so I put window set ups out of a 90 Vette since they were a different design and they were much faster. I only had to drill one hole in the bottom of the door.

Is there anything I can do for an 86 T/A to get faster windows?

 

have you tried greasing the slides with lithium greese? theres probably 20+ years of gunk and old greese built up on the slides making the motors work harder and slower to move the windows.

 

That's a good point. I'll try that. As I remember they are still slower than I would like so I wanted to see if there was a faster setup. The difference in the first design in the C4 Vette and the later design was night and day