Originally Posted by John_Kunkel
Originally Posted by mopowers
Originally Posted by John_Kunkel
The casting number didn't change over the years, the machining is what makes the difference. Easiest way to spot the '74-later support is the absence of the front clutch lube hole. (see pic)

BTW, the rear clutch piston is wrong for the Belleville, the later Belleville needs a thicker piston with the casting number 3743623.


What is the hole on the input shaft with the red arrow for?


The hole in the input is the new (for '74) source of front clutch lube. It replaces the hole in the support.


Thanks! Does that mean you can't use the pre-74 input shaft with a 74-up support? The reason I ask is that when I built my pre-74 727, I replaced the the stator support with a later one in order to run an aftermarket drum. Does that combo not work? The trans hasn't run yet.