727 Identification

[cudarob]

727 Transmission has on drivers side: H2538334 and 3108047, from what i can find it could be a 1966 ( all 1966 and under years are 19 spline output shaft) or a 67 and up which would be 24 spline up to 1978 where they went with lock up and 23 spline. Will pull on weekend however to count splines would like to order a convertor, need right spline count?

 

[DetMatt1]

The first # shows it to be a 1966 B & C for 361 or 383 late without high speed governor.

 

[cudarob]

Pulled Tranny out it is 19 spline input shaft, gonna need to replace with a 24 spline input shaft/drum so that i can get hight stall convertor. Thanks for the help!!!