Advance Adapters 27-3520AA Transmission Adapter, NV3550-Bronco Dana 20 Kit
050-27-3520AA
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Advance Adapters 27-3520AA Features:
- Kit Includes: Transfer case adapter, Dana 20 shifter bracket (T-shifter only), Ford bellhousing to NV3550 adapter plate, clutch disc, full crossmember with rubber support and transmission shifter handle.
- NV3550 you supply. Or use kit PN27-3520R.
- No driveline modifications necessary.
- The NV3550 assembly is 1/4 in. shorter than the factory 3 speed or 4 speed.
- The NV3550 is slightly taller than the stock 3 or 4 speed. A 1 in. body lift is recommended for the best transmission alignment.
- The Vehicle:
- The early Ford Broncos have always been a popular vehicle for conversions. These vehicles were normally equipped with a 6 cylinder or V8 engine up to a 3-speed transmission. On this transmission, Ford used two different lengths of adapter housings when coupling these 3 speeds to the stock transfer case. The adapter housing is either 6-1/2 in. or 9-3/8 in.. Vehicles equipped with a V8 had a 9-3/8 in. tailhousing which set the bellhousing further into the engine compartment. Vehicles with the 6-cylinder had a 6-1/2 in. tailhousing. This shorter adapter compensated for the longer engine. In 1973, Ford began offering the C4 automatic. A special tailhousing and output shaft was manufactured to couple this transmission to the stock transfer case. Ford no longer makes the C4 adapter.
- The 1966-77 vehicles were equipped to a Bronco Dana 20 transfer case. This transfer case, unlike the Jeep Dana 20, has the front driveshaft on the driver's side of the vehicle. The input gear of this transfer case is 6 spline. Ford always used a spud shaft that coupled this 6-spline transfer case to the transmission 28 spline.
- The transmission-to-transfer case adapters used both a dowel pin and alignment retainer. The spud shaft is supported in this retainer with a bearing. The adapter kits we manufacture utilize this type of design. In some applications, we also retain the stock spud shaft*. This transfer case has a 2.46:1 low gear ratio. In early 1973, Ford switch to a 2.34:1 low gear ratio.
- These transfer cases used two different shifter designs known as either the in.J in. pattern or in.T in. handle. The in.T in. handle was used from 1966 to 1972, and the in.J in. pattern from 1973 to 1977. The in.T in. handle shifter is a simple shifting mechanism and, to retain it with an adapter, only requires a pivot point for mounting. The in.J in. shifter requires the shift handle to be mounted in a location relatively close to its stock position. Retaining this shifter in its relatively stock location is hard to accomplish when adapting the various transmissions to the Dana 20. Vehicle owners having a in.J in. shifter is recommended to either change the transfer case shifter rods and go to a in.T in. style shifter or to contact one of the Bronco specialty shops that offer a twin stick replacement for the in.J in. shifter. A twin stick shifter replacing the in.J in. style should work with most of our adapters.
- The adapter housings we manufacture normally utilize the stock Bronco crossmember with the stock rubber supports. On new transmission assemblies, longer than stock, this crossmember may need to be relocated. There are a few adapters that require this crossmember to be modified. These modifications are noted in detail on the specific adapter instruction sheet.
- The Bronco Dana 20 transfer cases are a good, reliable transfer case; however, as with anything they do have some weaknesses. One problem area is the output shaft. With the increase of horse power and the reduction of gears, more stress and strain gets put on the transfer case output shaft. We are proud to be the manufacturer of a 32-spline output shaft for the Bronco Dana 20 transfer case. This output shaft was designed and engineered by Wild Horses of Stockton, California. This heavy-duty output shaft increases the output shaft straight up to 50% more than stock. This output shaft kit can only be purchased by contacting Wild Horses at (209)943-0991.
- FORD 302 TO JEEP NV3550 / 712544
- JEEP TRANS X BRONCO DANA 20 / 50-9920
- SQUARE STYLE NV3550 SHFT HANDLE / 716099A
- NV3550 TO BRONCO CROSSMEMBER / 716000
Specifications:
Motor Vehicles
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