This kit is preassembled for you.
Our divorced mount Dana 18 & Dana 20 conversion permits the use of a variety of different transmission applications and vehicle platforms.
The Novak divorced mount adapter is 5.75" long, as measured from the transfer case face to the center of the universal joint. The adapter itself is cast and machined high-grade aluminum alloy, featuring a strong flange and generous 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.
We strongly recommend our urethane rear mount #RMU in Related Products, below. It is strong, versatile, and can be configured with your crossmember solution. See Related Products, below and remember that hard mounting is never an appropriate option and will void any adapter warranty.
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 18 and Dana Spicer 20 transfer cases 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.
Our adapter shaft is splined for six spline input gears.
Consult our informative Dana gears interchange chart if necessary.
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.
The diameter of the transfer case center input locating bore will be either 3-5/32" or 4".
Assembly of this kit is can be straightforward. However, overall fabrication, mounting and layout considerations may make a divorced mount conversion a more advanced project.
The Novak adapter maintains factory clocking of your transfer case.
This transmission conversion will allow for the retention of the factory Dana 18 twin-stick shifters, Dana 18 single-stick shifter, and many of the Dana 20 shifters. This aspect will depend largely on your installation.
Use of the factory size driveshaft and yoke is recommended, but there is room for larger units if desired. Our adapter design has maximized clearance between the transmission and yoke. No transmission modifications are required for clearance on this wise.
Driveshaft length changes will be required, as this geartrain combination is longer than most factory Jeep combinations. However, since the transfer case can be divorced mounted, the driveshaft angle can be shared and mitigated between the jackshaft and the rear driveshaft.
Use of factory axles is completely acceptable with this conversion. Axle upgrades are not necessary, but they may be chosen for reasons external to this transmission upgrade.