: Tranny rebuild

11-17-04, 12:33 AM
I was just wondering if anyone knew how much it costs to rebuild the 4T80E tranny if you supply your own parts. I'm interested in beefing it up a bit with some high performance stuff. I found a company that sells High performance Clutches, shift solenoids, valve bodies, bands,...ect...ect. I also want to put in a Posi-Diff and a high stall torque converter. I'm just not sure how much it would cost. Thanks in advance.

These are the links to the company with the rebuild kit and the Posi-diff uilds


11-17-04, 11:04 AM
You might save $150 at best. When I rebuilt my own transmission, it ended up costing me $80 for the rebuild kit and $70 for the torque converter. If you add a shift kit, the extra labor might end up eating the $150 in savings. I installed the shift kit in my Allante transmission and I feel that it was really worth it.