700R4 Auto Transmission to Dana 20 Transfer Case Adapter Kit, 66-77 Ford Bronco SKU: 7617

GM 700R4 Auto Trans to Dana 20 Transfer Case Adapter | 66–77 Bronco

If you're installing a GM 700R4, 4L60, or early 4L60E automatic transmission into your 1966–77 Ford Bronco, this adapter kit is the essential link to your factory Dana 20 transfer case. Built from 356 T-6 heat-treated aluminum alloy, the adapter assembly is both strong and lightweight, designed with precision to mate these two components together with proper alignment and durability.

The adapter housing is just 2.50" in length, keeping your drivetrain compact and functional. This complete kit includes everything from a custom output shaft and spud shaft to all necessary gaskets, seals, hardware, and linkage brackets. The kit is designed specifically for Dana 20 transfer case with T-style shifter and requires either modification or replacement of the factory crossmember for proper fitment.

Key Features

• Fits 1966–77 Ford Bronco Dana 20 Transfer Case (T-style shifter only)

• Adapter Length: 2.50"

• Material: 356 T-6 heat-treated aluminum alloy for strength and longevity

• Kit Includes:

  • Adapter housing (x2)

  • Custom 700R-4 output shaft

  • Spud shaft

  • Shifter linkage bracket

  • Bearing retainer, bearing, snap ring

  • O-ring, gasket, seal

  • Complete fastening hardware

  • Installation instructions

Transmission Compatibility

• Compatible with:

  • GM 700R-4, 4L60, and early 4L60E (through 1996)

  • Must have:

    • Non-removable bellhousing

    • 4-bolt square rear case

    • 23.375" overall case length

• Not compatible with:

  • Late model 4L60E transmissions with removable bellhousing and 6-bolt hex pattern rear case

  • (These require an additional Advance Adapter)

Installation Notes

• Works only with T-style Dana 20 shifter linkages

• J-style linkage setups will require modification to retain use

• The stock Bronco crossmember must be replaced or modified to accommodate the adapter assembly

• Intended for 2WD and 4WD 700R4-style transmissions manufactured through 1996

Bolt GM overdrive performance in your classic Bronco - this adapter kit connects your GM 700R4 automatic to the stock Dana 20 for a modern transmission upgrade.