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NOTE:
This item ships from our supplier directly to you. Because of that the shipping cost that is quoted online for this item will be incorrect. We will contact by email to confirm the shipping charges and total. Your order WILL NOT SHIP until that confirmation is received.
Aisin AX15 5 Speed transmission Retrofit for 1966-1977 Early Ford Broncos.
The Adapter Kit:
This kit comes complete with the conversion components required to retrofit your early 1966-1977 Ford Bronco with the Aisin AX15 5 speed transmission.
Kit Includes:
- New AX15 Transmission
- Transfer Case Adapter & Transfer Case Shifter Linkage Bracket (T-style shifter only)
- Transmission To Engine Adapter
- Clutch Disc
- Cross Member Mount Kit
- Shifter Handle
The Transmission:
This transmission is manufactured by Aisin Warner. The overall transmission case length is 24.000". The output shaft on this transmission is 23 spline and protrudes approximately .400". This transmission is normally found coupled to the AMC 4.0L 6 cylinder engine and seems to be one of the better transmissions Jeep used, being very capable of handling the horsepower and torque of a V8 engine.
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 this 3 speed to the stock transfer case. The adapter housing is either 6-1/2" or 9-3/8". Vehicles equipped with a V8 had a 9-3/8" tailhousing which set the bellhousing further into the engine compartment. Vehicles with the 6 cylinder had a 6-1/2" 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 "J" pattern or "T" handle. The "T" handle was used from 1966 to 1972, and the "J" pattern from 1973 to 1977. The "T" handle shifter is a fairly simple shifting mechanism and, to retain it with an adapter, only requires a pivot point for mounting. The "J" 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 "J" shifter are recommended to either change the transfer case shifter rods and go to a "T" style shifter or to contact one of the Bronco specialty shops that offer a twin stick replacement for the "J" shifter. A twin stick shifter replacing the "J" style should work with most of our adapters.
The adapter housings Advance Adapters manufactures 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.
The New AX15 transmission is an ideal transmission swap for early Broncos.
The 5 speed is rated at 300 ft/lbs at the GVW of 3200.
The weight of the transmission is 97lbs.
The size and weight of the AX15 is very close to the stock 3.03 trans length.
A 1 body lift eases installation.
Gearing
1st : 3.83:1
2nd: 2.33:1
3rd: 1.44:1
4th: 1.00:1
5th: .079:1
Reverse 4.76:1
Note:
the adapter comes with shift linkage for "T" style
J-shift transfercase applications must use twin stick shifter.
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