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NV3550 Transmission Adapter Kit to Dana 20 Complete Kit, 1966-77 Classic Early Ford Bronco
AX15 Adapter to Dana 20 Complete Kit, 1966-77 Bronco
Our Price: $2,695.95

With its 3.83 to 1 first gear and 21% overdrive, the brand new AX15 transmission kit from Advance Adapters offers excellent drivability both on and off road. This transmission is great as a daily driver and/or weekend wheeler. Smoother shifting and shorter throw than the NV4500, it provides a less “truck like” feel. This transmission has over a 400 lb.-ft Torque capacity rating, with a 7,200# Gross Vehicle Weight rating (11,000# GCW). The AX15 assembly is so similar in length to the factory 3 speed or 4 speed that no driveline changes are usually required (when retaining the Dana 20 Transfer case). A 1" body lift is recommended for the best transmission alignment and ease of installation. (Installation with a J Pattern Dana 20 requires use of a Twin Stick shifter.)

Includes: NEW AX15 TRANSMISSION; TRANSFER CASE ADAPTER & TC SHIFTER BRKT.; FORD TO AX15 BELLHOUSING ADAPTER PLATE & CLUTCH DISC; AX15 CROSSMEMBER MOUNT KIT; AND SHIFT HANDLE. (NOTE: You must reuse your stock Ford Early Bronco V8 bell housing.)

STOCK PHOTOGRAPH: NOT REPRESENTATIVE OF ACTUAL TRANSMISSION.
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Advance Adapters Atlas II Transfer Case 3.8 Low 1966-77 Classic Early Ford Bronco
Atlas II Transfer Case 3.8 Low 1966-77 Bronco
Our Price: $2,395.00

The Advance Adapter Atlas II Transfer Case is the Ultimate replacement case for Early Broncos. With a 3.8 or optional 4.3 to 1 low range it gives the benefits of lower gears for off road crawling and allows for higher gears in the axles to maintain freeway comfort and gas mileage. Of course, if this transfer case is combined with low axle gears it provides excellent slow speed traction and control. With its twin stick shifter, independent control of front and rear output is available. Equipped with shift on the fly capability. Unit comes fully assembled ready to be installed with CV style output yokes. Requires a 2" body lift. With this case, a set of lockers and our Ultimate Suspension, you can be crawlin' with the big dogs! more info
Advance Adapters Atlas II Transfer Case 4.3 Low 1966-77 Bronco
Atlas II Transfer Case 4.3 Low 1966-77 Bronco
Our Price: $2,395.00

The Advance Adapter Atlas II Transfer Case is the Ultimate replacement case for Early Broncos. With a 3.8 or optional 4.3 to 1 low range it gives the benefits of lower gears for off road crawling and allows for higher gears in the axles to maintain freeway comfort and gas mileage. Of course, if this transfer case is combined with low axle gears it provides excellent slow speed traction and control. With its twin stick shifter, independent control of front and rear output is available. Equipped with shift on the fly capability. Unit comes fully assembled ready to be installed with CV style output yokes. Requires a 2" body lift. With this case, a set of lockers and our Ultimate Suspension, you can be crawlin' with the big dogs! more info
Adapter C6 Auto to Dana 20
Adapter C6 Auto to Dana 20
Our Price: $614.00

If you want the extra strength of a C6 trans, this is the adapter kit to use. The modifications are a bit more extensive than for the C4, but for heavy duty use this trans is a better choice. You must have a 4WD C6 trans with a 31 spline output shaft. The shaft will have to be shortened. If you have a 66-68 Bronco, you will have to replace the front driveshaft with the later style, #3811 and #3813 Companion Flange. If you have a 73-77 Bronco with the J-Pattern transfer case shifter, the mounting assembly and possibly the shift rails will have to be modified or replaced with our #2150 J-Pattern Transfer Case Shifter to reduce the modifications. You will also need an automatic shifter. This kit includes a new extension housing, a new 31 spline spud shaft, bearing retainer and necessary gaskets, seals and hardware. Note: Transfer case will be 2.5” farther back. more info
Adapter AOD 80-87 to Dana 20
Adapter AOD 88+ up to Dana 20
Our Price: $589.95

The 88 and newer Ford automatic overdrive transmission (AOD) has improved lubrication and is more capable of handling the V8. This trans is both larger and longer than the 3spd and will require the crossmember to be moved back approximately 1.5”. This will likely require driveline modification, a possible body lift, or modification of the transmission tunnel braces. This kit consists of an output shaft, tail housing and a special spud shaft for joining to a Dana 20. Disassembly of the transmission is necessary for installation (when using a 2wd donor transmission) and it’s recommended that it be done by a trained technician.
Ships directly form the manufacturer.
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Adapter AOD 80-87 to Dana 20
Adapter AOD 80-87 to Dana 20
Our Price: $589.95

The Ford AOD adapter to the Bronco Dana 20 is 6.00” in length. The adapter material is 356 T-6 heat treated aluminum alloy, and the adapter has a provision to retain the original early Bronco mount. The adapter kit includes an adapter housing, new AOD output shaft, spud shaft, retainer, bearing, snap ring, gasket, seal, o-ring, fastening hardware and adapter instructions. The adapter assembly will fit any 1966-77 Bronco Dana 20 transfer case. However, the T-style transfer case shifter linkage is required. This adapter kit is designed for exclusive use with the first generation Ford AOD automatic transmission (1980-1987). This 4 speed, overdrive transmission was first introduced during the 1980-87 model years. A new main 88-93 shaft is included in this kit which works fine in the early transmission. In 1988, Ford changed the oiling system of the AOD. If your donor transmission is a 1988 or newer, please order PN 3515.
Ships directly from the manufacturer.
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Jeep NV3550 Transmission Adapter  to Dana 20 Transfer Case, 1966-77 Classic Early Ford Bronco
Adapter NV3550 to Dana 20 Adapter, 1966-77 Bronco
Our Price: $479.95

4 to 1 low first gear and .22% overdrive means excellent driveability both on and off road. This transmission is great as a daily driver and weekend wheeler. Smoother shifting than the NV4500 it provides a less “truck like” feel. Its smaller overall size lends itself easily to swapping in without the need for relocating the transfer case or driveline changes. This transmission has a 300 lb.-ft Torque rating with a 7,200# Gross Vehicle Weight rating (11,000#GCW). Required to do this swap is an adapter from the transmission to a stock bellhousing complete with clutch disk and an adapter to the transfercase with shifter bracket, cross member mounting kit, shifter knob and shifter handle. A 1” body lift eases installation. The NV3550 is no longer being produced. If you need a complete transmission, please check with us about the all new AX15.


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Adapter C4 Auto to Dana 20
Adapter C4 Auto to Dana 20
Our Price: $479.00

These parts are just like the stock 73-77 Bronco parts no longer available from Ford. This kit consists of a new main shaft, tailhousing, bearing retainer, seal and hardware. The installation is easy since the cross-member bolts directly to the new tail section. Your 3-speed drive sleeve might need shortened to use with the new output shaft. No driveshaft modifications are necessary. An aftermarket shifter or C4 Auto shifter from a Mustang, Pinto or 73-77 Bronco will be needed more info
Adapter NP435/T18 4 Speed to Dana 20
Adapter NP435/T18 4 Speed to Dana 20
Our Price: $442.00

This setup will give a Bronco a super low 1st gear approximately double that of the stock 3-speed. The NP435 can be found in 67-83 F100-F350. The T18 can be found in 68-82 F100-F250. The trans you select must have a 28 spline output shaft. The new overall length of the NP435 and the adapter will directly replace the original V8 assembly, so no driveshaft modification is necessary. The T18 and adapter are approximately 1” longer than the original V8 assembly so driveshaft mods are necessary. This kit includes a machined aluminum adapter housing, gaskets and bolts. The gearshift handle will have to be rebent to come out under the dash. Mods to the floorboard will also be necessary. more info
Adapter ZF 5 Speed to T-Pattern Shift Dana 20 1966-77 Classic Early Ford Bronco Conversion
Adapter ZF 5 Speed to T-Pattern Dana 20 1966-77 Bronco
Our Price: $429.95

Our Ford ZF 5 speed adapter to the Bronco Dana 20 is 1.40” in length. The adapter material is 356 T-6 heat treated aluminum alloy. The adapter kit includes a adapter plate, special spud shaft with 31 internal spline, shifter linkage bracket, transfer case pivot bolt, bearing retainer, sealed bearing snap ring, gaskets, o-ring, fastening hardware and adapter instructions. Transfer Case The adapter assembly will fit any 1966-77 Bronco Dana 20 transfer case. This adapter will only work with the “T” style shifter. Transfer cases with a “J” style linkage will require modifications to retain this linkage. This cast iron, gear driven case has a low range of 2.46:1 and a front output shaft on the driver’s side. Transmission The kit is designed for exclusive use with the Ford ZF 5 speed manual transmission ( ZF S542 & S547). This heavy duty 5 speed is all aluminum with an integral bellhousing to the case. It can be easily identified by it’s diamond-shape casting ribs and a small 4-bolt top cover. The S542 was used in Ford trucks 1987-94 and the S547 1995 to present.


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