I have it running, and like my brother (shon) said, need to do a little tuning to it and get it just right. However, it can't be far off, it will leave posi's pretty easily
Like my brother said, i did have to go with a TH 400, I just never could get the 4L80 to do just right. It works fine in his truck, but there was something different with mine. Thats the reason I always like to go to my junk yard and pick out a motor that is still in a vehicle, have them pull everything needed from the same vehicle, then let me come a pick it up. This motor and trans had been out for a while, been picked over, and who knows if everything came out of the same vehicle!! Oh well, the 400 does the job
The truck is for sale for a great price if anyone wants some info on it