Originally Posted by ASE Doc
While Im asking questions, I am also wondering about the 2nd accumulator valve. I understand that this valve has alot to do with 1-2 shift firmness. My trans has always had a bang 1-2 shift at light throttle, ever since it was built 13 years ago. I have worked around this by manually shifting from 1-2 and running the speed up a little. I am wondering what the overall effect might be of changing to a smaller valve. Mine is the largest or letter "B" valve, which is supposed to produce the firmest shift. Would going with a smaller valve cause a slow 1-2 shift at higher speed and throttle opening? If so, this may not be the way I should go since this trans is meant for performance use behind a higher HP motor. Again, any input is appreciated. BTW, I am installing the Superior 2nd servo and the extra wide 2-4 band.
You miss part of the equation in shift firmness.
The 1 - 2 accumulator is the bolt on housing with springs and piston inside. 3 bolts hold it on the case next to the v-body. .. That accumulator may be blocked or broken or very stiff springs inside.
The shift hole in the separator plate may be large diameter from a previous ''repair or rebuild''