79 and newer 727's
In addition to everything listed above, the front pump stator support has to be matched to the input shaft and hub, which I’m sure your trans guy knows. 78 and newer 727s had 3 sealing rings compared to pre 78 had only 2. The stator support will have 3 holes and 3 balls if it’s lockup, if it’s non lockup it will have 2 balls and 3 holes. Attached is a photo of my stator support which is non lockup. As you can see there are 3 holes and only 2 check balls in the holes.
In addition to everything listed above, the front pump stator support has to be matched to the input shaft and hub, which I’m sure your trans guy knows. 78 and newer 727s had 3 sealing rings compared to pre 78 had only 2. The stator support will have 3 holes and 3 balls if it’s lockup, if it’s non lockup it will have 2 balls and 3 holes. Attached is a photo of my stator support which is non lockup. As you can see there are 3 holes and only 2 check balls in the holes.