This adapter kit includes a custom output shaft, adapter housing, and fastening hardware to retain the S-series truck transfer case. This kit works inconjuction with the original GM 700R4 adapter.
S-series trucks that were previously equipped with a 5 speed, it is necessary to purchase the stock GM 4wd adapter housing and transfer case shifter bracket from the 700R4 application.
This adapter kit is designed for exclusive use with the 4wd GM TH350 automatic transmission. This GM automatic was commonly found stock in vehicles from 1969-81. The Turbo Hydramatic 350 three speeds automatic is one of the most transmissions available in GM 4x4 trucks. The stock 4wd output shaft protrudes from the back of the case approx 1”.
1980-81 model TH350 4wd output protrudes out 2.750”. And this TH350 also uses a lock-up torque convert, and was always used with an aluminum transfer case.