Re: 4L80E & TH400 Tech.
Are you building from scratch, Or just pulling the VB & Plate?
I like blocking the 2-3 accumulator because the results are more consistent & repeatable. Dual Fed Directs also affects 2-3 shift feel, As does the Direct Clutch return springs.
Use of Hi-Energy (Flat Face) 4L80E frictions in the Direct Clutch produces a less harsh shift than TH400 Tan Paper frictions once the frictions are broke-in/compressed to their final form.
Friction Modifiers or lack of in the ATF also plays a roll, All my recommendations are based on the use of Dexron III ATF.
The use of Wave Plate/s in the clutch pack also has a tremendous affect.
It seems I'm answering questions with questions, Not my intent.....But I want to give the most accurate advice I can.
|