The GM 700R4 main shaft kit is used when replacing a TH400. Once installed into the 700R4, the output side of the 700R4 looks identical to a 4WD TH400 that is being replaced. The adapter kit includes a new output shaft, plastic washer, adapter plate, TH400 gasket, o-ring, metric fastening hardware, and adapter instructions.
||GM NP208 (32 Spline)
||GM NP205 (32 Spline)
The adapter assembly fits 85-91 GM NP205/NP208 transfer cases that were previously used with a TH400. This adapter assembly requires that use of the original GM TH400 4wd adapter. These GM transfer cases features a 32 spline female input shaft, and a circular-six front bolt pattern.
- GM 4L60
- GM 4L60E Early Model (1992-1997)
- GM 700R4
This kit is designed for exclusive use with the 700R-4/4L60/4L60E. The overall case length of the transmission is 23.375”, has non-removable bell housing, and a 4 bolt square rear case. Late model 4L60E automatics will have removable bell housing and a 6 bolt hex pattern rear case.
The late model 4L60E automatics will require VSS kit: use 716073 for 93-96 and 50-0405 for 97-Up