Original transmission, 4L80E, same transmission choice that will be going into my next project car because it has lasted so well. I did change the fluid and filter in it about 2 years ago.
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Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix
100% Pontiacs in my driveway!!! What's in your driveway?
If you don't take some of the RACETRACK home with you, Ya got cheated 
  
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