Divorced Mount Dana 20 Conversion with 4-inch Bore in Transfer Case

The Novak divorced mount Dana 20 conversion allows the use of a variety of different transmission applications and vehicle platforms. The adapter is 5.75" long, as measured from the transfer case face to the center of the universal joint, and is cast and machined high-grade aluminum alloy, featuring thick flanges and a heavy cross-section. The adapter shaft is machined from triple-alloy gear steel mounted in twin bearings to sustain moment loading from the forces of the transfer case helical, involute input gear.

This kit includes the adapter housing, shaft, bearings, gaskets, seal, 1310 input yoke, hardware and instructions. The kit will come pre-assembled and ready to install to your transfer case.

Any transmission you deem appropriate for your project is compatible. We provide a 1310 input yoke to which you will connect a jackshaft from your transmission output.

All Jeep models of the Dana Spicer 20 transfer case are compatible with this adapter assembly. IH versions of these transfer cases are also compatible. The correct input bore and spline count must be observed. This adapter is not suitable for the Ford Bronco transfer case as it is of an entirely different design in attachment and drop.

Note that the adapter shaft is splined for six spline input gears. Six-spline gears are most common and usually found behind Jeep T84, T90, T86, T89, T98, T18, T15 & T150. Factory Jeep TH400 to Dana 20 combinations had a fifteen-spline input gear, which must be replaced by a compatible six spline version. International Harvester Dana 20's that had the TF-727 automatic had a 23-spline input gear, which must be replaced by a compatible six spline version.

All Warn and Saturn type overdrives are compatible with this conversion as long as the spline count is correct. We do not have replacement gears for the overdrive version.

All Dana 20's have a 4" bore, regardless of the transmission they were joined to.

 

 

• Fits All with Dana 20 Transfer Case (and Dana 18 with 4" Bore)
• Includes: Adapter Housing, Shaft, Bearings, Gaskets, Seal, 1310 Input Yoke, Hardware and Instructions
• 4-inch Bore in Transfer Case
• Divorced Dana 20 Instructions (PDF Format)