Advance Adapters
When you’re looking to upgrade or modify your Jeep Dana, look no further than Advance Adapters. We carry all-in-one kits that make it easy to modify your ride to accommodate all kinds of terrains, from the open road to rugged and wild.
GM TH400 Transmission Adapter Specs
The GM TH400 automatic transmission adapter forto the Jeep Dana 300 is 4.250” in length. The adapter material is 356 T6 heat-treated aluminum alloy and has a provision for a transmission mount. The adapter kit includes an adapter housing, new 27-spline TH400 output shaft, 27x23 spud shaft, a bearing, snap rings, gaskets, fastening hardware, and adapter instructions.
Note: Please specify when using the AMC TH400 version. The GM TH400 and AMC TH400 are similar products; however, the difference is that the AMC version has a rotated rear 6-bolt pattern.
Transfer Case
The adapter assembly fits the1980 to 19-86 Jeep Dana 300. All 300s use a 23-spline input. Some of the adapters we manufacture include a new Dana 300 input with a different input spline. Therefore, if you obtain a Dana 300 from a salvage yard, please verify the input spline.
Transmission
This adapter kit is designed for exclusive use with the 4WD GM TH400 automatic transmission. The TH400 has a case length of 24.250” and a “Texas-shaped” oil pan underneath beneathit. The factory output shaft has a 32-spline count of 32 spline and had various output stick-out lengths.
Note: Our adapter kit is designed to replace TH400 output shafts with stick-out lengths of 1.5” and& 2.5”.
If you have questions about this product or are unsure if this TH400 4 x 4 transfer adapter kit is right for your use, please reach out to the experts at Advance Adapters. Fill out the contact page quick form, and a knowledgeable team member will respond shortly.
Bill Of Materials
50-6400