The Dodge NV4500 adapter to the Bronco Dana 20 is 1.00” in length. And the overall length of this transmission and adapter is 19.50”. Adapter material is 356 T6 heat treated aluminum alloy. The adapter kit includes a Bronco Dana 20 adapter plate, spud shaft with 23 internal spline, t-case shifter bracket, bearing retainer, bearing, snap ring, gaskets, seal, o-ring, fastening hardware, and adapter instructions. The adapters we manufacture only fit the Dodge standard duty NV4500 23 spline and 29 spline transmissions. The adapter we manufacture couples to the stock Dodge tailhousing. This adapter plate provides the proper bolt pattern and provision for a new alignment retainer and special spud shaft. The spud shaft is available both the 23 and 29 spline inputs found on the Dodge NV4500s.
The adapter assembly will fit any 1966-77 Bronco Dana 20 transfer case. This adapter will only work with the “T” style shifter.
The adapter kit is designed for exclusive use with the Dodge 4WD NV4500 transmission with a 23 spline output shaft. The NV4500 was introduced in 1993 and has been recognized as the ultimate manual transmission of choice. With a 5.61:1 low gear ratio, 27% overdrive and a synchro-reverse (not found in the Chevy NV4500), this transmission works well with the early Broncos. When installing these components, driveline and floorboard modifications will be required.