Everything MUST stay clean!
(pic 1) Remove valve body half attaching screws(slotted. phillips or torx depending on the year)
(pic 2) Leave this check ball out if you want a tire chirping 2nd gear.Engine power and torque,rear end ratio and intermediate band servo arm ratio play a big part in shift firmnessReinstall all balls for just firm shift and resize holes as listed below.*
(pic 3) Separator plate hole with left pick drill to 11/64 OK if already bigger
*Separator plate hole right pick drill
(look at the picture carefully the pick tip is in the hole) 1/8 inch for real firm
7/64 slightly more than firm
3/32 for firm
Drill hole with pocket screw driver to 1/8 OK to leave as is if a triangular hole
(pic 4) Turn pressure regulator adjustment counter clock wise with a 3/16 allen wrench until almost out of threads.
Put halves back together and tighten valve body screws.
This is for 727 or 904 Lock up or non lock up.
More to come!