I am in the process of rebuilding my first 4L60-E (I've done a 4L30-E before) and I had a couple questions.
1st: In terms of the input drum pistons I know there are both aluminum and steel models, and that the new steel models need new return springs to work due to centrifugal forces bending the springs. I do not have the return springs needed for the new overrun clutch piston but I already bought new bonded pistons for each of these. Is there any chance I could interchange these? Meaning could I use new steel bonded 3/4 and forward pistons but use the old aluminium overrun piston, or do I have to use all of the same kind?
2nd: My current understanding is that the pressure manifold switch is used to essentially tell the computer what position the manual valve is in. Save for a lengthy explanation, lets just say I do not need this functionality in terms of electronics. Would it be problematic if I were to not reinstall the pressure manifold switch? Could I simply block off the holes where the fluid would go if it were there or is this something that would cause internal problems in the transmission.
There may be more questions in the future but thanks for the help!